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From jbel...@apache.org
Subject [2/3] refactor nodetool, encapsulating each command into a subclass patch by Clément Lardeur; reviewed by Mikhail Stepura for CASSANDRA-6381
Date Fri, 10 Jan 2014 18:40:23 GMT
http://git-wip-us.apache.org/repos/asf/cassandra/blob/892d8e69/src/java/org/apache/cassandra/tools/NodeTool.java
----------------------------------------------------------------------
diff --git a/src/java/org/apache/cassandra/tools/NodeTool.java b/src/java/org/apache/cassandra/tools/NodeTool.java
new file mode 100644
index 0000000..c9ddf4f
--- /dev/null
+++ b/src/java/org/apache/cassandra/tools/NodeTool.java
@@ -0,0 +1,2144 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.cassandra.tools;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.lang.management.MemoryUsage;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.text.DecimalFormat;
+import java.text.SimpleDateFormat;
+import java.util.*;
+import java.util.concurrent.ExecutionException;
+import javax.management.openmbean.TabularData;
+
+import com.google.common.base.Joiner;
+import com.google.common.base.Throwables;
+import com.google.common.collect.LinkedHashMultimap;
+import com.google.common.collect.Maps;
+
+import com.yammer.metrics.reporting.JmxReporter;
+import io.airlift.command.*;
+import org.apache.cassandra.concurrent.JMXEnabledThreadPoolExecutorMBean;
+import org.apache.cassandra.config.DatabaseDescriptor;
+import org.apache.cassandra.db.ColumnFamilyStoreMBean;
+import org.apache.cassandra.db.Keyspace;
+import org.apache.cassandra.db.compaction.CompactionManagerMBean;
+import org.apache.cassandra.db.compaction.OperationType;
+import org.apache.cassandra.locator.EndpointSnitchInfoMBean;
+import org.apache.cassandra.net.MessagingServiceMBean;
+import org.apache.cassandra.service.CacheServiceMBean;
+import org.apache.cassandra.streaming.ProgressInfo;
+import org.apache.cassandra.streaming.SessionInfo;
+import org.apache.cassandra.streaming.StreamState;
+import org.apache.cassandra.utils.EstimatedHistogram;
+import org.apache.cassandra.utils.FBUtilities;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkState;
+import static com.google.common.base.Throwables.getStackTraceAsString;
+import static com.google.common.collect.Iterables.toArray;
+import static com.google.common.collect.Lists.newArrayList;
+import static java.lang.Integer.parseInt;
+import static java.lang.String.format;
+import static org.apache.commons.lang3.ArrayUtils.EMPTY_STRING_ARRAY;
+import static org.apache.commons.lang3.StringUtils.EMPTY;
+import static org.apache.commons.lang3.StringUtils.join;
+
+public class NodeTool
+{
+    private static final String HISTORYFILE = "nodetool.history";
+
+    public static void main(String... args)
+    {
+        List<Class<? extends Runnable>> commands = newArrayList(
+                Help.class,
+                Info.class,
+                Ring.class,
+                NetStats.class,
+                CfStats.class,
+                CfHistograms.class,
+                Cleanup.class,
+                ClearSnapshot.class,
+                Compact.class,
+                Scrub.class,
+                Flush.class,
+                UpgradeSSTable.class,
+                DisableAutoCompaction.class,
+                EnableAutoCompaction.class,
+                CompactionStats.class,
+                CompactionHistory.class,
+                Decommission.class,
+                DescribeCluster.class,
+                DisableBinary.class,
+                EnableBinary.class,
+                EnableGossip.class,
+                DisableGossip.class,
+                EnableHandoff.class,
+                EnableThrift.class,
+                GetCompactionThreshold.class,
+                GetCompactionThroughput.class,
+                GetStreamThroughput.class,
+                GetEndpoints.class,
+                GetSSTables.class,
+                GossipInfo.class,
+                InvalidateKeyCache.class,
+                InvalidateRowCache.class,
+                Join.class,
+                Move.class,
+                PauseHandoff.class,
+                ResumeHandoff.class,
+                ProxyHistograms.class,
+                Rebuild.class,
+                Refresh.class,
+                RemoveToken.class,
+                RemoveNode.class,
+                Repair.class,
+                SetCacheCapacity.class,
+                SetCompactionThreshold.class,
+                SetCompactionThroughput.class,
+                SetStreamThroughput.class,
+                SetTraceProbability.class,
+                Snapshot.class,
+                Status.class,
+                StatusBinary.class,
+                StatusThrift.class,
+                Stop.class,
+                StopDaemon.class,
+                Version.class,
+                DescribeRing.class,
+                RebuildIndex.class,
+                RangeKeySample.class,
+                EnableBackup.class,
+                DisableBackup.class,
+                ResetLocalSchema.class,
+                ReloadTriggers.class,
+                SetCacheKeysToSave.class,
+                DisableThrift.class,
+                DisableHandoff.class,
+                Drain.class,
+                TruncateHints.class,
+                TpStats.class
+        );
+
+        Cli<Runnable> parser = Cli.<Runnable>builder("nodetool")
+                .withDescription("Manage your Cassandra cluster")
+                .withDefaultCommand(Help.class)
+                .withCommands(commands)
+                .build();
+
+        int status = 0;
+        try
+        {
+            Runnable parse = parser.parse(args);
+            printHistory(args);
+            parse.run();
+        } catch (IllegalArgumentException |
+                IllegalStateException |
+                ParseArgumentsMissingException |
+                ParseArgumentsUnexpectedException |
+                ParseOptionConversionException |
+                ParseOptionMissingException |
+                ParseOptionMissingValueException |
+                ParseCommandMissingException |
+                ParseCommandUnrecognizedException e)
+        {
+            badUse(e);
+            status = 1;
+        } catch (Throwable throwable)
+        {
+            err(Throwables.getRootCause(throwable));
+            status = 2;
+        }
+
+        System.exit(status);
+    }
+
+    private static void printHistory(String... args)
+    {
+        //don't bother to print if no args passed (meaning, nodetool is just printing out the sub-commands list)
+        if (args.length == 0)
+            return;
+
+        String cmdLine = Joiner.on(" ").skipNulls().join(args);
+        cmdLine = cmdLine.replaceFirst("(?<=(-pw|--password))\\s+\\S+", " <hidden>");
+
+        try (FileWriter writer = new FileWriter(new File(FBUtilities.getToolsOutputDirectory(), HISTORYFILE), true))
+        {
+            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS");
+            writer.append(sdf.format(new Date())).append(": ").append(cmdLine).append(System.lineSeparator());
+        }
+        catch (IOException ioe)
+        {
+            //quietly ignore any errors about not being able to write out history
+        }
+    }
+
+    private static void badUse(Exception e)
+    {
+        System.out.println("nodetool: " + e.getMessage());
+        System.out.println("See 'nodetool help' or 'nodetool help <command>'.");
+    }
+
+    private static void err(Throwable e)
+    {
+        System.err.println("error: " + e.getMessage());
+        System.err.println("-- StackTrace --");
+        System.err.println(getStackTraceAsString(e));
+    }
+
+    public static abstract class NodeToolCmd implements Runnable
+    {
+
+        @Option(type = OptionType.GLOBAL, name = {"-h", "--host"}, description = "Node hostname or ip address")
+        private String host = "127.0.0.1";
+
+        @Option(type = OptionType.GLOBAL, name = {"-p", "--port"}, description = "Remote jmx agent port number")
+        private String port = "7199";
+
+        @Option(type = OptionType.GLOBAL, name = {"-u", "--username"}, description = "Remote jmx agent username")
+        private String username = EMPTY;
+
+        @Option(type = OptionType.GLOBAL, name = {"-pw", "--password"}, description = "Remote jmx agent password")
+        private String password = EMPTY;
+
+        @Override
+        public void run()
+        {
+            try (NodeProbe probe = connect())
+            {
+                execute(probe);
+            } catch (IOException e)
+            {
+                throw new RuntimeException("Error while closing JMX connection", e);
+            }
+
+        }
+
+        protected abstract void execute(NodeProbe probe);
+
+        private NodeProbe connect()
+        {
+            NodeProbe nodeClient = null;
+
+            try
+            {
+                if (username.isEmpty())
+                    nodeClient = new NodeProbe(host, parseInt(port));
+                else
+                    nodeClient = new NodeProbe(host, parseInt(port), username, password);
+            } catch (IOException e)
+            {
+                Throwable rootCause = Throwables.getRootCause(e);
+                System.err.println(format("nodetool: Failed to connect to '%s:%s' - %s: '%s'.", host, port, rootCause.getClass().getSimpleName(), rootCause.getMessage()));
+                System.exit(1);
+            }
+
+            return nodeClient;
+        }
+
+        protected List<String> parseOptionalKeyspace(List<String> cmdArgs, NodeProbe nodeProbe)
+        {
+            List<String> keyspaces = new ArrayList<>();
+
+            if (cmdArgs == null || cmdArgs.isEmpty())
+                keyspaces.addAll(nodeProbe.getKeyspaces());
+            else
+                keyspaces.add(cmdArgs.get(0));
+
+            for (String keyspace : keyspaces)
+            {
+                if (!nodeProbe.getKeyspaces().contains(keyspace))
+                    throw new IllegalArgumentException("Keyspace [" + keyspace + "] does not exist.");
+            }
+
+            return Collections.unmodifiableList(keyspaces);
+        }
+
+        protected String[] parseOptionalColumnFamilies(List<String> cmdArgs)
+        {
+            return cmdArgs.size() <= 1 ? EMPTY_STRING_ARRAY : toArray(cmdArgs.subList(1, cmdArgs.size()), String.class);
+        }
+    }
+
+    @Command(name = "info", description = "Print node information (uptime, load, ...)")
+    public static class Info extends NodeToolCmd
+    {
+        @Option(name = {"-T", "--tokens"}, description = "Display all tokens")
+        private boolean tokens = false;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            boolean gossipInitialized = probe.isInitialized();
+
+            System.out.printf("%-17s: %s%n", "ID", probe.getLocalHostId());
+            System.out.printf("%-17s: %s%n", "Gossip active", gossipInitialized);
+            System.out.printf("%-17s: %s%n", "Thrift active", probe.isThriftServerRunning());
+            System.out.printf("%-17s: %s%n", "Native Transport active", probe.isNativeTransportRunning());
+            System.out.printf("%-17s: %s%n", "Load", probe.getLoadString());
+            if (gossipInitialized)
+                System.out.printf("%-17s: %s%n", "Generation No", probe.getCurrentGenerationNumber());
+            else
+                System.out.printf("%-17s: %s%n", "Generation No", 0);
+
+            // Uptime
+            long secondsUp = probe.getUptime() / 1000;
+            System.out.printf("%-17s: %d%n", "Uptime (seconds)", secondsUp);
+
+            // Memory usage
+            MemoryUsage heapUsage = probe.getHeapMemoryUsage();
+            double memUsed = (double) heapUsage.getUsed() / (1024 * 1024);
+            double memMax = (double) heapUsage.getMax() / (1024 * 1024);
+            System.out.printf("%-17s: %.2f / %.2f%n", "Heap Memory (MB)", memUsed, memMax);
+
+            // Data Center/Rack
+            System.out.printf("%-17s: %s%n", "Data Center", probe.getDataCenter());
+            System.out.printf("%-17s: %s%n", "Rack", probe.getRack());
+
+            // Exceptions
+            System.out.printf("%-17s: %s%n", "Exceptions", probe.getStorageMetric("Exceptions"));
+
+            CacheServiceMBean cacheService = probe.getCacheServiceMBean();
+
+            // Key Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds
+            System.out.printf("%-17s: entries %d, size %d (bytes), capacity %d (bytes), %d hits, %d requests, %.3f recent hit rate, %d save period in seconds%n",
+                    "Key Cache",
+                    probe.getCacheMetric("KeyCache", "Entries"),
+                    probe.getCacheMetric("KeyCache", "Size"),
+                    probe.getCacheMetric("KeyCache", "Capacity"),
+                    probe.getCacheMetric("KeyCache", "Hits"),
+                    probe.getCacheMetric("KeyCache", "Requests"),
+                    probe.getCacheMetric("KeyCache", "HitRate"),
+                    cacheService.getKeyCacheSavePeriodInSeconds());
+
+            // Row Cache: Hits, Requests, RecentHitRate, SavePeriodInSeconds
+            System.out.printf("%-17s: entries %d, size %d (bytes), capacity %d (bytes), %d hits, %d requests, %.3f recent hit rate, %d save period in seconds%n",
+                    "Row Cache",
+                    probe.getCacheMetric("RowCache", "Entries"),
+                    probe.getCacheMetric("RowCache", "Size"),
+                    probe.getCacheMetric("RowCache", "Capacity"),
+                    probe.getCacheMetric("RowCache", "Hits"),
+                    probe.getCacheMetric("RowCache", "Requests"),
+                    probe.getCacheMetric("RowCache", "HitRate"),
+                    cacheService.getRowCacheSavePeriodInSeconds());
+
+            // Tokens
+            List<String> tokens = probe.getTokens();
+            if (tokens.size() == 1 || this.tokens)
+                for (String token : tokens)
+                    System.out.printf("%-17s: %s%n", "Token", token);
+            else
+                System.out.printf("%-17s: (invoke with -T/--tokens to see all %d tokens)%n", "Token", tokens.size());
+        }
+    }
+
+    @Command(name = "ring", description = "Print information about the token ring")
+    public static class Ring extends NodeToolCmd
+    {
+        @Arguments(description = "Specify a keyspace for accurate ownership information (topology awareness)")
+        private String keyspace = null;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            Map<String, String> tokensToEndpoints = probe.getTokenToEndpointMap();
+            LinkedHashMultimap<String, String> endpointsToTokens = LinkedHashMultimap.create();
+            for (Map.Entry<String, String> entry : tokensToEndpoints.entrySet())
+                endpointsToTokens.put(entry.getValue(), entry.getKey());
+
+            int maxAddressLength = Collections.max(endpointsToTokens.keys(), new Comparator<String>()
+            {
+                @Override
+                public int compare(String first, String second)
+                {
+                    return ((Integer) first.length()).compareTo(second.length());
+                }
+            }).length();
+
+            String formatPlaceholder = "%%-%ds  %%-12s%%-7s%%-8s%%-16s%%-20s%%-44s%%n";
+            String format = format(formatPlaceholder, maxAddressLength);
+
+            // Calculate per-token ownership of the ring
+            Map<InetAddress, Float> ownerships;
+            try
+            {
+                ownerships = probe.effectiveOwnership(keyspace);
+            } catch (IllegalStateException ex)
+            {
+                ownerships = probe.getOwnership();
+                System.out.printf("Note: Ownership information does not include topology; for complete information, specify a keyspace%n");
+            }
+            try
+            {
+                System.out.println();
+                Map<String, Map<InetAddress, Float>> perDcOwnerships = Maps.newLinkedHashMap();
+                // get the different datasets and map to tokens
+                for (Map.Entry<InetAddress, Float> ownership : ownerships.entrySet())
+                {
+                    String dc = probe.getEndpointSnitchInfoProxy().getDatacenter(ownership.getKey().getHostAddress());
+                    if (!perDcOwnerships.containsKey(dc))
+                        perDcOwnerships.put(dc, new LinkedHashMap<InetAddress, Float>());
+                    perDcOwnerships.get(dc).put(ownership.getKey(), ownership.getValue());
+                }
+                for (Map.Entry<String, Map<InetAddress, Float>> entry : perDcOwnerships.entrySet())
+                    printDc(probe, format, entry.getKey(), endpointsToTokens, entry.getValue());
+            } catch (UnknownHostException e)
+            {
+                throw new RuntimeException(e);
+            }
+
+            if (DatabaseDescriptor.getNumTokens() > 1)
+            {
+                System.out.println("  Warning: \"nodetool ring\" is used to output all the tokens of a node.");
+                System.out.println("  To view status related info of a node use \"nodetool status\" instead.\n");
+            }
+        }
+
+        private void printDc(NodeProbe probe, String format,
+                             String dc,
+                             LinkedHashMultimap<String, String> endpointsToTokens,
+                             Map<InetAddress, Float> filteredOwnerships)
+        {
+            Collection<String> liveNodes = probe.getLiveNodes();
+            Collection<String> deadNodes = probe.getUnreachableNodes();
+            Collection<String> joiningNodes = probe.getJoiningNodes();
+            Collection<String> leavingNodes = probe.getLeavingNodes();
+            Collection<String> movingNodes = probe.getMovingNodes();
+            Map<String, String> loadMap = probe.getLoadMap();
+
+            System.out.println("Datacenter: " + dc);
+            System.out.println("==========");
+
+            // get the total amount of replicas for this dc and the last token in this dc's ring
+            List<String> tokens = new ArrayList<>();
+            String lastToken = "";
+
+            for (Map.Entry<InetAddress, Float> entry : filteredOwnerships.entrySet())
+            {
+                tokens.addAll(endpointsToTokens.get(entry.getKey().getHostAddress()));
+                lastToken = tokens.get(tokens.size() - 1);
+            }
+
+
+            System.out.printf(format, "Address", "Rack", "Status", "State", "Load", "Owns", "Token");
+
+            if (filteredOwnerships.size() > 1)
+                System.out.printf(format, "", "", "", "", "", "", lastToken);
+            else
+                System.out.println();
+
+            for (Map.Entry<InetAddress, Float> entry : filteredOwnerships.entrySet())
+            {
+                String endpoint = entry.getKey().getHostAddress();
+                for (String token : endpointsToTokens.get(endpoint))
+                {
+                    String rack;
+                    try
+                    {
+                        rack = probe.getEndpointSnitchInfoProxy().getRack(endpoint);
+                    } catch (UnknownHostException e)
+                    {
+                        rack = "Unknown";
+                    }
+
+                    String status = liveNodes.contains(endpoint)
+                                    ? "Up"
+                                    : deadNodes.contains(endpoint)
+                                      ? "Down"
+                                      : "?";
+
+                    String state = "Normal";
+
+                    if (joiningNodes.contains(endpoint))
+                        state = "Joining";
+                    else if (leavingNodes.contains(endpoint))
+                        state = "Leaving";
+                    else if (movingNodes.contains(endpoint))
+                        state = "Moving";
+
+                    String load = loadMap.containsKey(endpoint)
+                                  ? loadMap.get(endpoint)
+                                  : "?";
+                    String owns = new DecimalFormat("##0.00%").format(entry.getValue());
+                    System.out.printf(format, endpoint, rack, status, state, load, owns, token);
+                }
+            }
+            System.out.println();
+        }
+    }
+
+    @Command(name = "netstats", description = "Print network information on provided host (connecting node by default)")
+    public static class NetStats extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.out.printf("Mode: %s%n", probe.getOperationMode());
+            Set<StreamState> statuses = probe.getStreamStatus();
+            if (statuses.isEmpty())
+                System.out.println("Not sending any streams.");
+            for (StreamState status : statuses)
+            {
+                System.out.printf("%s %s%n", status.description, status.planId.toString());
+                for (SessionInfo info : status.sessions)
+                {
+                    System.out.printf("    %s%n", info.peer.toString());
+                    if (!info.receivingSummaries.isEmpty())
+                    {
+                        System.out.printf("        Receiving %d files, %d bytes total%n", info.getTotalFilesToReceive(), info.getTotalSizeToReceive());
+                        for (ProgressInfo progress : info.getReceivingFiles())
+                        {
+                            System.out.printf("            %s%n", progress.toString());
+                        }
+                    }
+                    if (!info.sendingSummaries.isEmpty())
+                    {
+                        System.out.printf("        Sending %d files, %d bytes total%n", info.getTotalFilesToSend(), info.getTotalSizeToSend());
+                        for (ProgressInfo progress : info.getSendingFiles())
+                        {
+                            System.out.printf("            %s%n", progress.toString());
+                        }
+                    }
+                }
+            }
+
+            System.out.printf("Read Repair Statistics:%nAttempted: %d%nMismatch (Blocking): %d%nMismatch (Background): %d%n", probe.getReadRepairAttempted(), probe.getReadRepairRepairedBlocking(), probe.getReadRepairRepairedBackground());
+
+            MessagingServiceMBean ms = probe.msProxy;
+            System.out.printf("%-25s", "Pool Name");
+            System.out.printf("%10s", "Active");
+            System.out.printf("%10s", "Pending");
+            System.out.printf("%15s%n", "Completed");
+
+            int pending;
+            long completed;
+
+            pending = 0;
+            for (int n : ms.getCommandPendingTasks().values())
+                pending += n;
+            completed = 0;
+            for (long n : ms.getCommandCompletedTasks().values())
+                completed += n;
+            System.out.printf("%-25s%10s%10s%15s%n", "Commands", "n/a", pending, completed);
+
+            pending = 0;
+            for (int n : ms.getResponsePendingTasks().values())
+                pending += n;
+            completed = 0;
+            for (long n : ms.getResponseCompletedTasks().values())
+                completed += n;
+            System.out.printf("%-25s%10s%10s%15s%n", "Responses", "n/a", pending, completed);
+        }
+    }
+
+    @Command(name = "cfstats", description = "Print statistics on column families")
+    public static class CfStats extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspace.cfname>...]", description = "List of column families (or keyspace) names")
+        private List<String> cfnames = new ArrayList<>();
+
+        @Option(name = "-i", description = "Ignore the list of column families and display the remaining cfs")
+        private boolean ignore = false;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            OptionFilter filter = new OptionFilter(ignore, cfnames);
+            Map<String, List<ColumnFamilyStoreMBean>> cfstoreMap = new HashMap<>();
+
+            // get a list of column family stores
+            Iterator<Map.Entry<String, ColumnFamilyStoreMBean>> cfamilies = probe.getColumnFamilyStoreMBeanProxies();
+
+            while (cfamilies.hasNext())
+            {
+                Map.Entry<String, ColumnFamilyStoreMBean> entry = cfamilies.next();
+                String keyspaceName = entry.getKey();
+                ColumnFamilyStoreMBean cfsProxy = entry.getValue();
+
+                if (!cfstoreMap.containsKey(keyspaceName) && filter.isColumnFamilyIncluded(entry.getKey(), cfsProxy.getColumnFamilyName()))
+                {
+                    List<ColumnFamilyStoreMBean> columnFamilies = new ArrayList<>();
+                    columnFamilies.add(cfsProxy);
+                    cfstoreMap.put(keyspaceName, columnFamilies);
+                } else if (filter.isColumnFamilyIncluded(entry.getKey(), cfsProxy.getColumnFamilyName()))
+                {
+                    cfstoreMap.get(keyspaceName).add(cfsProxy);
+                }
+            }
+
+            // make sure all specified kss and cfs exist
+            filter.verifyKeyspaces(probe.getKeyspaces());
+            filter.verifyColumnFamilies();
+
+            // print out the table statistics
+            for (Map.Entry<String, List<ColumnFamilyStoreMBean>> entry : cfstoreMap.entrySet())
+            {
+                String keyspaceName = entry.getKey();
+                List<ColumnFamilyStoreMBean> columnFamilies = entry.getValue();
+                long keyspaceReadCount = 0;
+                long keyspaceWriteCount = 0;
+                int keyspacePendingTasks = 0;
+                double keyspaceTotalReadTime = 0.0f;
+                double keyspaceTotalWriteTime = 0.0f;
+
+                System.out.println("Keyspace: " + keyspaceName);
+                for (ColumnFamilyStoreMBean cfstore : columnFamilies)
+                {
+                    String cfName = cfstore.getColumnFamilyName();
+                    long writeCount = ((JmxReporter.TimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "WriteLatency")).getCount();
+                    long readCount = ((JmxReporter.TimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "ReadLatency")).getCount();
+
+                    if (readCount > 0)
+                    {
+                        keyspaceReadCount += readCount;
+                        keyspaceTotalReadTime += (long) probe.getColumnFamilyMetric(keyspaceName, cfName, "ReadTotalLatency");
+                    }
+                    if (writeCount > 0)
+                    {
+                        keyspaceWriteCount += writeCount;
+                        keyspaceTotalWriteTime += (long) probe.getColumnFamilyMetric(keyspaceName, cfName, "WriteTotalLatency");
+                    }
+                    keyspacePendingTasks += (int) probe.getColumnFamilyMetric(keyspaceName, cfName, "PendingTasks");
+                }
+
+                double keyspaceReadLatency = keyspaceReadCount > 0
+                                             ? keyspaceTotalReadTime / keyspaceReadCount / 1000
+                                             : Double.NaN;
+                double keyspaceWriteLatency = keyspaceWriteCount > 0
+                                              ? keyspaceTotalWriteTime / keyspaceWriteCount / 1000
+                                              : Double.NaN;
+
+                System.out.println("\tRead Count: " + keyspaceReadCount);
+                System.out.println("\tRead Latency: " + format("%s", keyspaceReadLatency) + " ms.");
+                System.out.println("\tWrite Count: " + keyspaceWriteCount);
+                System.out.println("\tWrite Latency: " + format("%s", keyspaceWriteLatency) + " ms.");
+                System.out.println("\tPending Tasks: " + keyspacePendingTasks);
+
+                // print out column family statistics for this keyspace
+                for (ColumnFamilyStoreMBean cfstore : columnFamilies)
+                {
+                    String cfName = cfstore.getColumnFamilyName();
+                    if (cfName.contains("."))
+                        System.out.println("\t\tTable (index): " + cfName);
+                    else
+                        System.out.println("\t\tTable: " + cfName);
+
+                    System.out.println("\t\tSSTable count: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "LiveSSTableCount"));
+
+                    int[] leveledSStables = cfstore.getSSTableCountPerLevel();
+                    if (leveledSStables != null)
+                    {
+                        System.out.print("\t\tSSTables in each level: [");
+                        for (int level = 0; level < leveledSStables.length; level++)
+                        {
+                            int count = leveledSStables[level];
+                            System.out.print(count);
+                            long maxCount = 4L; // for L0
+                            if (level > 0)
+                                maxCount = (long) Math.pow(10, level);
+                            //  show max threshold for level when exceeded
+                            if (count > maxCount)
+                                System.out.print("/" + maxCount);
+
+                            if (level < leveledSStables.length - 1)
+                                System.out.print(", ");
+                            else
+                                System.out.println("]");
+                        }
+                    }
+                    System.out.println("\t\tSpace used (live), bytes: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "LiveDiskSpaceUsed"));
+                    System.out.println("\t\tSpace used (total), bytes: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "TotalDiskSpaceUsed"));
+                    System.out.println("\t\tSpace used by snapshots (total), bytes: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "SnapshotsSize"));
+                    System.out.println("\t\tSSTable Compression Ratio: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "CompressionRatio"));
+                    System.out.println("\t\tMemtable cell count: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "MemtableColumnsCount"));
+                    System.out.println("\t\tMemtable data size, bytes: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "MemtableDataSize"));
+                    System.out.println("\t\tMemtable switch count: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "MemtableSwitchCount"));
+                    System.out.println("\t\tLocal read count: " + ((JmxReporter.TimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "ReadLatency")).getCount());
+                    double localReadLatency = ((JmxReporter.TimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "ReadLatency")).getMean() / 1000;
+                    double localRLatency = localReadLatency > 0 ? localReadLatency : Double.NaN;
+                    System.out.printf("\t\tLocal read latency: %01.3f ms%n", localRLatency);
+                    System.out.println("\t\tLocal write count: " + ((JmxReporter.TimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "WriteLatency")).getCount());
+                    double localWriteLatency = ((JmxReporter.TimerMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "WriteLatency")).getMean() / 1000;
+                    double localWLatency = localWriteLatency > 0 ? localWriteLatency : Double.NaN;
+                    System.out.printf("\t\tLocal write latency: %01.3f ms%n", localWLatency);
+                    System.out.println("\t\tPending tasks: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "PendingTasks"));
+                    System.out.println("\t\tBloom filter false positives: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "BloomFilterFalsePositives"));
+                    System.out.println("\t\tBloom filter false ratio: " + format("%01.5f", probe.getColumnFamilyMetric(keyspaceName, cfName, "RecentBloomFilterFalseRatio")));
+                    System.out.println("\t\tBloom filter space used, bytes: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "BloomFilterDiskSpaceUsed"));
+                    System.out.println("\t\tCompacted partition minimum bytes: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "MinRowSize"));
+                    System.out.println("\t\tCompacted partition maximum bytes: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "MaxRowSize"));
+                    System.out.println("\t\tCompacted partition mean bytes: " + probe.getColumnFamilyMetric(keyspaceName, cfName, "MeanRowSize"));
+                    System.out.println("\t\tAverage live cells per slice (last five minutes): " + ((JmxReporter.HistogramMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "LiveScannedHistogram")).getMean());
+                    System.out.println("\t\tAverage tombstones per slice (last five minutes): " + ((JmxReporter.HistogramMBean) probe.getColumnFamilyMetric(keyspaceName, cfName, "TombstoneScannedHistogram")).getMean());
+
+                    System.out.println("");
+                }
+                System.out.println("----------------");
+            }
+        }
+
+        /**
+         * Used for filtering keyspaces and columnfamilies to be displayed using the cfstats command.
+         */
+        private static class OptionFilter
+        {
+            private Map<String, List<String>> filter = new HashMap<>();
+            private Map<String, List<String>> verifier = new HashMap<>();
+            private List<String> filterList = new ArrayList<>();
+            private boolean ignoreMode;
+
+            public OptionFilter(boolean ignoreMode, List<String> filterList)
+            {
+                this.filterList.addAll(filterList);
+                this.ignoreMode = ignoreMode;
+
+                for (String s : filterList)
+                {
+                    String[] keyValues = s.split("\\.", 2);
+
+                    // build the map that stores the ks' and cfs to use
+                    if (!filter.containsKey(keyValues[0]))
+                    {
+                        filter.put(keyValues[0], new ArrayList<String>());
+                        verifier.put(keyValues[0], new ArrayList<String>());
+
+                        if (keyValues.length == 2)
+                        {
+                            filter.get(keyValues[0]).add(keyValues[1]);
+                            verifier.get(keyValues[0]).add(keyValues[1]);
+                        }
+                    } else
+                    {
+                        if (keyValues.length == 2)
+                        {
+                            filter.get(keyValues[0]).add(keyValues[1]);
+                            verifier.get(keyValues[0]).add(keyValues[1]);
+                        }
+                    }
+                }
+            }
+
+            public boolean isColumnFamilyIncluded(String keyspace, String columnFamily)
+            {
+                // supplying empty params list is treated as wanting to display all kss & cfs
+                if (filterList.isEmpty())
+                    return !ignoreMode;
+
+                List<String> cfs = filter.get(keyspace);
+
+                // no such keyspace is in the map
+                if (cfs == null)
+                    return ignoreMode;
+                    // only a keyspace with no cfs was supplied
+                    // so ignore or include (based on the flag) every column family in specified keyspace
+                else if (cfs.size() == 0)
+                    return !ignoreMode;
+
+                // keyspace exists, and it contains specific cfs
+                verifier.get(keyspace).remove(columnFamily);
+                return ignoreMode ^ cfs.contains(columnFamily);
+            }
+
+            public void verifyKeyspaces(List<String> keyspaces)
+            {
+                for (String ks : verifier.keySet())
+                    if (!keyspaces.contains(ks))
+                        throw new IllegalArgumentException("Unknown keyspace: " + ks);
+            }
+
+            public void verifyColumnFamilies()
+            {
+                for (String ks : filter.keySet())
+                    if (verifier.get(ks).size() > 0)
+                        throw new IllegalArgumentException("Unknown column families: " + verifier.get(ks).toString() + " in keyspace: " + ks);
+            }
+        }
+    }
+
+    @Command(name = "cfhistograms", description = "Print statistic histograms for a given column family")
+    public static class CfHistograms extends NodeToolCmd
+    {
+        @Arguments(usage = "<keyspace> <cfname>", description = "The keyspace and column family name")
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkArgument(args.size() == 2, "cfhistograms requires ks and cf args");
+
+            String keyspace = args.get(0);
+            String cfname = args.get(1);
+
+            // calculate percentile of row size and column count
+            long[] estimatedRowSize = (long[]) probe.getColumnFamilyMetric(keyspace, cfname, "EstimatedRowSizeHistogram");
+            long[] estimatedColumnCount = (long[]) probe.getColumnFamilyMetric(keyspace, cfname, "EstimatedColumnCountHistogram");
+
+            long[] bucketOffsets = new EstimatedHistogram().getBucketOffsets();
+            EstimatedHistogram rowSizeHist = new EstimatedHistogram(bucketOffsets, estimatedRowSize);
+            EstimatedHistogram columnCountHist = new EstimatedHistogram(bucketOffsets, estimatedColumnCount);
+
+            // build arrays to store percentile values
+            double[] estimatedRowSizePercentiles = new double[7];
+            double[] estimatedColumnCountPercentiles = new double[7];
+            double[] offsetPercentiles = new double[]{0.5, 0.75, 0.95, 0.98, 0.99};
+            for (int i = 0; i < offsetPercentiles.length; i++)
+            {
+                estimatedRowSizePercentiles[i] = rowSizeHist.percentile(offsetPercentiles[i]);
+                estimatedColumnCountPercentiles[i] = columnCountHist.percentile(offsetPercentiles[i]);
+            }
+
+            // min value
+            estimatedRowSizePercentiles[5] = rowSizeHist.min();
+            estimatedColumnCountPercentiles[5] = columnCountHist.min();
+            // max value
+            estimatedRowSizePercentiles[6] = rowSizeHist.max();
+            estimatedColumnCountPercentiles[6] = columnCountHist.max();
+
+            String[] percentiles = new String[]{"50%", "75%", "95%", "98%", "99%", "Min", "Max"};
+            double[] readLatency = probe.metricPercentilesAsArray((JmxReporter.HistogramMBean) probe.getColumnFamilyMetric(keyspace, cfname, "ReadLatency"));
+            double[] writeLatency = probe.metricPercentilesAsArray((JmxReporter.TimerMBean) probe.getColumnFamilyMetric(keyspace, cfname, "WriteLatency"));
+            double[] sstablesPerRead = probe.metricPercentilesAsArray((JmxReporter.HistogramMBean) probe.getColumnFamilyMetric(keyspace, cfname, "SSTablesPerReadHistogram"));
+
+            System.out.println(format("%s/%s histograms", keyspace, cfname));
+            System.out.println(format("%-10s%10s%18s%18s%18s%18s",
+                    "Percentile", "SSTables", "Write Latency", "Read Latency", "Partition Size", "Cell Count"));
+            System.out.println(format("%-10s%10s%18s%18s%18s%18s",
+                    "", "", "(micros)", "(micros)", "(bytes)", ""));
+
+            for (int i = 0; i < percentiles.length; i++)
+            {
+                System.out.println(format("%-10s%10.2f%18.2f%18.2f%18.0f%18.0f",
+                        percentiles[i],
+                        sstablesPerRead[i],
+                        writeLatency[i],
+                        readLatency[i],
+                        estimatedRowSizePercentiles[i],
+                        estimatedColumnCountPercentiles[i]));
+            }
+            System.out.println();
+        }
+    }
+
+    @Command(name = "cleanup", description = "Triggers the immediate cleanup of keys no longer belonging to a node. By default, clean all keyspaces")
+    public static class Cleanup extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspace> <cfnames>...]", description = "The keyspace followed by one or many column families")
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            List<String> keyspaces = parseOptionalKeyspace(args, probe);
+            String[] cfnames = parseOptionalColumnFamilies(args);
+
+            for (String keyspace : keyspaces)
+            {
+                if (Keyspace.SYSTEM_KS.equals(keyspace))
+                    continue;
+
+                try
+                {
+                    probe.forceKeyspaceCleanup(keyspace, cfnames);
+                } catch (Exception e)
+                {
+                    throw new RuntimeException("Error occurred during cleanup", e);
+                }
+            }
+        }
+    }
+
+    @Command(name = "clearsnapshot", description = "Remove the snapshot with the given name from the given keyspaces. If no snapshotName is specified we will remove all snapshots")
+    public static class ClearSnapshot extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspaces>...] ", description = "Remove snapshots from the given keyspaces")
+        private List<String> keyspaces = new ArrayList<>();
+
+        @Option(title = "snapshot_name", name = "-t", description = "Remove the snapshot with a given name")
+        private String snapshotName = EMPTY;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            StringBuilder sb = new StringBuilder();
+
+            sb.append("Requested clearing snapshot(s) for ");
+
+            if (keyspaces.isEmpty())
+                sb.append("[all keyspaces]");
+            else
+                sb.append("[").append(join(keyspaces, ", ")).append("]");
+
+            if (!snapshotName.isEmpty())
+                sb.append(" with snapshot name [").append(snapshotName).append("]");
+
+            System.out.println(sb.toString());
+
+            try
+            {
+                probe.clearSnapshot(snapshotName, toArray(keyspaces, String.class));
+            } catch (IOException e)
+            {
+                throw new RuntimeException("Error during clearing snapshots", e);
+            }
+        }
+    }
+
+    @Command(name = "compact", description = "Force a (major) compaction on one or more column families")
+    public static class Compact extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspace> <cfnames>...]", description = "The keyspace followed by one or many column families")
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            List<String> keyspaces = parseOptionalKeyspace(args, probe);
+            String[] cfnames = parseOptionalColumnFamilies(args);
+
+            for (String keyspace : keyspaces)
+            {
+                try
+                {
+                    probe.forceKeyspaceCompaction(keyspace, cfnames);
+                } catch (Exception e)
+                {
+                    throw new RuntimeException("Error occurred during compaction", e);
+                }
+            }
+        }
+    }
+
+    @Command(name = "flush", description = "Flush one or more column families")
+    public static class Flush extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspace> <cfnames>...]", description = "The keyspace followed by one or many column families")
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            List<String> keyspaces = parseOptionalKeyspace(args, probe);
+            String[] cfnames = parseOptionalColumnFamilies(args);
+
+            for (String keyspace : keyspaces)
+            {
+                try
+                {
+                    probe.forceKeyspaceFlush(keyspace, cfnames);
+                } catch (Exception e)
+                {
+                    throw new RuntimeException("Error occurred during flushing", e);
+                }
+            }
+        }
+    }
+
+    @Command(name = "scrub", description = "Scrub (rebuild sstables for) one or more column families")
+    public static class Scrub extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspace> <cfnames>...]", description = "The keyspace followed by one or many column families")
+        private List<String> args = new ArrayList<>();
+
+        @Option(title = "disable_snapshot", name = {"-ns", "--no-snapshot"}, description = "Scrubbed CFs will be snapshotted first, if disableSnapshot is false. (default false)")
+        private boolean disableSnapshot = false;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            List<String> keyspaces = parseOptionalKeyspace(args, probe);
+            String[] cfnames = parseOptionalColumnFamilies(args);
+
+            for (String keyspace : keyspaces)
+            {
+                try
+                {
+                    probe.scrub(disableSnapshot, keyspace, cfnames);
+                } catch (Exception e)
+                {
+                    throw new RuntimeException("Error occurred during flushing", e);
+                }
+            }
+        }
+    }
+
+    @Command(name = "disableautocompaction", description = "Disable autocompaction for the given keyspace and column family")
+    public static class DisableAutoCompaction extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspace> <cfnames>...]", description = "The keyspace followed by one or many column families")
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            List<String> keyspaces = parseOptionalKeyspace(args, probe);
+            String[] cfnames = parseOptionalColumnFamilies(args);
+
+            for (String keyspace : keyspaces)
+            {
+                try
+                {
+                    probe.disableAutoCompaction(keyspace, cfnames);
+                } catch (IOException e)
+                {
+                    throw new RuntimeException("Error occurred during disabling auto-compaction", e);
+                }
+            }
+        }
+    }
+
+    @Command(name = "enableautocompaction", description = "Enable autocompaction for the given keyspace and column family")
+    public static class EnableAutoCompaction extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspace> <cfnames>...]", description = "The keyspace followed by one or many column families")
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            List<String> keyspaces = parseOptionalKeyspace(args, probe);
+            String[] cfnames = parseOptionalColumnFamilies(args);
+
+            for (String keyspace : keyspaces)
+            {
+                try
+                {
+                    probe.enableAutoCompaction(keyspace, cfnames);
+                } catch (IOException e)
+                {
+                    throw new RuntimeException("Error occurred during enabling auto-compaction", e);
+                }
+            }
+        }
+    }
+
+    @Command(name = "upgradesstables", description = "Rewrite sstables (for the requested column families) that are not on the current version (thus upgrading them to said current version)")
+    public static class UpgradeSSTable extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspace> <cfnames>...]", description = "The keyspace followed by one or many column families")
+        private List<String> args = new ArrayList<>();
+
+        @Option(title = "include_all", name = {"-a", "--include-all-sstables"}, description = "Use -a to include all sstables, even those already on the current version")
+        private boolean includeAll = false;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            List<String> keyspaces = parseOptionalKeyspace(args, probe);
+            String[] cfnames = parseOptionalColumnFamilies(args);
+
+            for (String keyspace : keyspaces)
+            {
+                try
+                {
+                    probe.upgradeSSTables(keyspace, !includeAll, cfnames);
+                } catch (Exception e)
+                {
+                    throw new RuntimeException("Error occurred during enabling auto-compaction", e);
+                }
+            }
+        }
+    }
+
+    @Command(name = "compactionstats", description = "Print statistics on compactions")
+    public static class CompactionStats extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            int compactionThroughput = probe.getCompactionThroughput();
+            CompactionManagerMBean cm = probe.getCompactionManagerProxy();
+            System.out.println("pending tasks: " + probe.getCompactionMetric("PendingTasks"));
+            if (cm.getCompactions().size() > 0)
+                System.out.printf("%25s%16s%16s%16s%16s%10s%10s%n", "compaction type", "keyspace", "table", "completed", "total", "unit", "progress");
+            long remainingBytes = 0;
+            for (Map<String, String> c : cm.getCompactions())
+            {
+                String percentComplete = new Long(c.get("total")) == 0
+                                         ? "n/a"
+                                         : new DecimalFormat("0.00").format((double) new Long(c.get("completed")) / new Long(c.get("total")) * 100) + "%";
+                System.out.printf("%25s%16s%16s%16s%16s%10s%10s%n", c.get("taskType"), c.get("keyspace"), c.get("columnfamily"), c.get("completed"), c.get("total"), c.get("unit"), percentComplete);
+                if (c.get("taskType").equals(OperationType.COMPACTION.toString()))
+                    remainingBytes += (new Long(c.get("total")) - new Long(c.get("completed")));
+            }
+            long remainingTimeInSecs = compactionThroughput == 0 || remainingBytes == 0
+                                       ? -1
+                                       : (remainingBytes) / (1024L * 1024L * compactionThroughput);
+            String remainingTime = remainingTimeInSecs < 0
+                                   ? "n/a"
+                                   : format("%dh%02dm%02ds", remainingTimeInSecs / 3600, (remainingTimeInSecs % 3600) / 60, (remainingTimeInSecs % 60));
+
+            System.out.printf("%25s%10s%n", "Active compaction remaining time : ", remainingTime);
+        }
+    }
+
+    @Command(name = "compactionhistory", description = "Print history of compaction")
+    public static class CompactionHistory extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.out.println("Compaction History: ");
+
+            TabularData tabularData = probe.getCompactionHistory();
+            if (tabularData.isEmpty())
+            {
+                System.out.printf("There is no compaction history");
+                return;
+            }
+
+            String format = "%-41s%-19s%-29s%-26s%-15s%-15s%s%n";
+            List<String> indexNames = tabularData.getTabularType().getIndexNames();
+            System.out.printf(format, toArray(indexNames, String.class));
+
+            Set<?> values = tabularData.keySet();
+            for (Object eachValue : values)
+            {
+                List<?> value = (List<?>) eachValue;
+                System.out.printf(format, toArray(value, Object.class));
+            }
+        }
+    }
+
+    @Command(name = "decommission", description = "Decommission the *node I am connecting to*")
+    public static class Decommission extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            try
+            {
+                probe.decommission();
+            } catch (InterruptedException e)
+            {
+                throw new RuntimeException("Error decommissioning node", e);
+            }
+        }
+    }
+
+    @Command(name = "describecluster", description = "Print the name, snitch, partitioner and schema version of a cluster")
+    public static class DescribeCluster extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            // display cluster name, snitch and partitioner
+            System.out.println("Cluster Information:");
+            System.out.println("\tName: " + probe.getClusterName());
+            System.out.println("\tSnitch: " + probe.getEndpointSnitchInfoProxy().getSnitchName());
+            System.out.println("\tPartitioner: " + probe.getPartitioner());
+
+            // display schema version for each node
+            System.out.println("\tSchema versions:");
+            Map<String, List<String>> schemaVersions = probe.getSpProxy().getSchemaVersions();
+            for (String version : schemaVersions.keySet())
+            {
+                System.out.println(format("\t\t%s: %s%n", version, schemaVersions.get(version)));
+            }
+        }
+    }
+
+    @Command(name = "disablebinary", description = "Disable native transport (binary protocol)")
+    public static class DisableBinary extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.stopNativeTransport();
+        }
+    }
+
+    @Command(name = "enablebinary", description = "Reenable native transport (binary protocol)")
+    public static class EnableBinary extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.startNativeTransport();
+        }
+    }
+
+    @Command(name = "enablegossip", description = "Reenable gossip")
+    public static class EnableGossip extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.startGossiping();
+        }
+    }
+
+    @Command(name = "disablegossip", description = "Disable gossip (effectively marking the node down)")
+    public static class DisableGossip extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.stopGossiping();
+        }
+    }
+
+    @Command(name = "enablehandoff", description = "Reenable the future hints storing on the current node")
+    public static class EnableHandoff extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.enableHintedHandoff();
+        }
+    }
+
+    @Command(name = "enablethrift", description = "Reenable thrift server")
+    public static class EnableThrift extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.startThriftServer();
+        }
+    }
+
+    @Command(name = "getcompactionthreshold", description = "Print min and max compaction thresholds for a given column family")
+    public static class GetCompactionThreshold extends NodeToolCmd
+    {
+        @Arguments(usage = "<keyspace> <cfname>", description = "The keyspace with a column family")
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkArgument(args.size() == 2, "getcompactionthreshold requires ks and cf args");
+            String ks = args.get(0);
+            String cf = args.get(1);
+
+            ColumnFamilyStoreMBean cfsProxy = probe.getCfsProxy(ks, cf);
+            System.out.println("Current compaction thresholds for " + ks + "/" + cf + ": \n" +
+                    " min = " + cfsProxy.getMinimumCompactionThreshold() + ", " +
+                    " max = " + cfsProxy.getMaximumCompactionThreshold());
+        }
+    }
+
+    @Command(name = "getcompactionthroughput", description = "Print the MB/s throughput cap for compaction in the system")
+    public static class GetCompactionThroughput extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.out.println("Current compaction throughput: " + probe.getCompactionThroughput() + " MB/s");
+        }
+    }
+
+    @Command(name = "getstreamthroughput", description = "Print the MB/s throughput cap for streaming in the system")
+    public static class GetStreamThroughput extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.out.println("Current stream throughput: " + probe.getStreamThroughput() + " MB/s");
+        }
+    }
+
+    @Command(name = "getendpoints", description = "Print the end points that owns the key")
+    public static class GetEndpoints extends NodeToolCmd
+    {
+        @Arguments(usage = "<keyspace> <cfname> <key>", description = "The keyspace, the column family, and the key for which we need to find the endpoint")
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkArgument(args.size() == 3, "getendpoints requires ks, cf and key args");
+            String ks = args.get(0);
+            String cf = args.get(1);
+            String key = args.get(2);
+
+            List<InetAddress> endpoints = probe.getEndpoints(ks, cf, key);
+            for (InetAddress endpoint : endpoints)
+            {
+                System.out.println(endpoint.getHostAddress());
+            }
+        }
+    }
+
+    @Command(name = "getsstables", description = "Print the sstable filenames that own the key")
+    public static class GetSSTables extends NodeToolCmd
+    {
+        @Arguments(usage = "<keyspace> <cfname> <key>", description = "The keyspace, the column family, and the key")
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkArgument(args.size() == 3, "getsstables requires ks, cf and key args");
+            String ks = args.get(0);
+            String cf = args.get(1);
+            String key = args.get(2);
+
+            List<String> sstables = probe.getSSTables(ks, cf, key);
+            for (String sstable : sstables)
+            {
+                System.out.println(sstable);
+            }
+        }
+    }
+
+    @Command(name = "gossipinfo", description = "Shows the gossip information for the cluster")
+    public static class GossipInfo extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.out.println(probe.getGossipInfo());
+        }
+    }
+
+    @Command(name = "invalidatekeycache", description = "Invalidate the key cache")
+    public static class InvalidateKeyCache extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.invalidateKeyCache();
+        }
+    }
+
+    @Command(name = "invalidaterowcache", description = "Invalidate the row cache")
+    public static class InvalidateRowCache extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.invalidateRowCache();
+        }
+    }
+
+    @Command(name = "join", description = "Join the ring")
+    public static class Join extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkState(!probe.isJoined(), "This node has already joined the ring.");
+
+            try
+            {
+                probe.joinRing();
+            } catch (IOException e)
+            {
+                throw new RuntimeException("Error during joining the ring", e);
+            }
+        }
+    }
+
+    @Command(name = "move", description = "Move node on the token ring to a new token")
+    public static class Move extends NodeToolCmd
+    {
+        @Arguments(usage = "<new token>", description = "The new token. (for negative tokens)", required = true)
+        private String newToken = EMPTY;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            try
+            {
+                probe.move(newToken);
+            } catch (IOException e)
+            {
+                throw new RuntimeException("Error during moving node", e);
+            }
+        }
+    }
+
+    @Command(name = "pausehandoff", description = "Pause hints delivery process")
+    public static class PauseHandoff extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.pauseHintsDelivery();
+        }
+    }
+
+    @Command(name = "resumehandoff", description = "Resume hints delivery process")
+    public static class ResumeHandoff extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.resumeHintsDelivery();
+        }
+    }
+
+
+    @Command(name = "proxyhistograms", description = "Print statistic histograms for network operations")
+    public static class ProxyHistograms extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            String[] percentiles = new String[]{"50%", "75%", "95%", "98%", "99%", "Min", "Max"};
+            double[] readLatency = probe.metricPercentilesAsArray(probe.getProxyMetric("Read"));
+            double[] writeLatency = probe.metricPercentilesAsArray(probe.getProxyMetric("Write"));
+            double[] rangeLatency = probe.metricPercentilesAsArray(probe.getProxyMetric("RangeSlice"));
+
+            System.out.println("proxy histograms");
+            System.out.println(format("%-10s%18s%18s%18s",
+                    "Percentile", "Read Latency", "Write Latency", "Range Latency"));
+            System.out.println(format("%-10s%18s%18s%18s",
+                    "", "(micros)", "(micros)", "(micros)"));
+            for (int i = 0; i < percentiles.length; i++)
+            {
+                System.out.println(format("%-10s%18.2f%18.2f%18.2f",
+                        percentiles[i],
+                        readLatency[i],
+                        writeLatency[i],
+                        rangeLatency[i]));
+            }
+            System.out.println();
+        }
+    }
+
+    @Command(name = "rebuild", description = "Rebuild data by streaming from other nodes (similarly to bootstrap)")
+    public static class Rebuild extends NodeToolCmd
+    {
+        @Arguments(usage = "<src-dc-name>", description = "Name of DC from which to select sources for streaming. By default, pick any DC")
+        private String sourceDataCenterName = null;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.rebuild(sourceDataCenterName);
+        }
+    }
+
+    @Command(name = "refresh", description = "Load newly placed SSTables to the system without restart")
+    public static class Refresh extends NodeToolCmd
+    {
+        @Arguments(usage = "<keyspace> <cfname>", description = "The keyspace and column family name")
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkArgument(args.size() == 2, "refresh requires ks and cf args");
+            probe.loadNewSSTables(args.get(0), args.get(1));
+        }
+    }
+
+    @Deprecated
+    @Command(name = "removetoken", description = "DEPRECATED (see removenode)", hidden = true)
+    public static class RemoveToken extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.err.println("Warn: removetoken is deprecated, please use removenode instead");
+        }
+    }
+
+    @Command(name = "removenode", description = "Show status of current node removal, force completion of pending removal or remove provided ID")
+    public static class RemoveNode extends NodeToolCmd
+    {
+        @Arguments(title = "remove_operation", usage = "<status>|<force>|<ID>", description = "The keyspace and column family name", required = true)
+        private String removeOperation = EMPTY;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            switch (removeOperation)
+            {
+                case "status":
+                    System.out.println("RemovalStatus: " + probe.getRemovalStatus());
+                    break;
+                case "force":
+                    System.out.println("RemovalStatus: " + probe.getRemovalStatus());
+                    probe.forceRemoveCompletion();
+                    break;
+                default:
+                    probe.removeNode(removeOperation);
+                    break;
+            }
+        }
+    }
+
+    @Command(name = "repair", description = "Repair one or more column families")
+    public static class Repair extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspace> <cfnames>...]", description = "The keyspace followed by one or many column families")
+        private List<String> args = new ArrayList<>();
+
+        @Option(title = "parallel", name = {"-par", "--parallel"}, description = "Use -par to carry out a parallel repair")
+        private boolean parallel = false;
+
+        @Option(title = "local_dc", name = {"-local", "--in-local-dc"}, description = "Use -local to only repair against nodes in the same datacenter")
+        private boolean localDC = false;
+
+        @Option(title = "specific_dc", name = {"-dc", "--in-dc"}, description = "Use -dc to repair specific datacenters")
+        private List<String> specificDataCenters = new ArrayList<>();
+
+        @Option(title = "start_token", name = {"-st", "--start-token"}, description = "Use -st to specify a token at which the repair range starts")
+        private String startToken = EMPTY;
+
+        @Option(title = "end_token", name = {"-et", "--end-token"}, description = "Use -et to specify a token at which repair range ends")
+        private String endToken = EMPTY;
+
+        @Option(title = "primary_range", name = {"-pr", "--partitioner-range"}, description = "Use -pr to repair only the first range returned by the partitioner")
+        private boolean primaryRange = false;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            List<String> keyspaces = parseOptionalKeyspace(args, probe);
+            String[] cfnames = parseOptionalColumnFamilies(args);
+
+            for (String keyspace : keyspaces)
+            {
+                try
+                {
+                    Collection<String> dataCenters = null;
+                    if (!specificDataCenters.isEmpty())
+                        dataCenters = newArrayList(specificDataCenters);
+                    else if (localDC)
+                        dataCenters = newArrayList(probe.getDataCenter());
+
+                    if (!startToken.isEmpty() || !endToken.isEmpty())
+                        probe.forceRepairRangeAsync(System.out, keyspace, !parallel, dataCenters, startToken, endToken);
+                    else
+                        probe.forceRepairAsync(System.out, keyspace, !parallel, dataCenters, primaryRange, cfnames);
+                } catch (Exception e)
+                {
+                    throw new RuntimeException("Error occurred during repair", e);
+                }
+            }
+        }
+    }
+
+    @Command(name = "setcachecapacity", description = "Set global key and row cache capacities (in MB units)")
+    public static class SetCacheCapacity extends NodeToolCmd
+    {
+        @Arguments(title = "<key-cache-capacity> <row-cache-capacity>", usage = "<key-cache-capacity> <row-cache-capacity>", description = "Key cache and row cache (in MB)", required = true)
+        private List<Integer> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkArgument(args.size() == 2, "setcachecapacity requires key-cache-capacity, and row-cache-capacity args.");
+            probe.setCacheCapacities(args.get(0), args.get(1));
+        }
+    }
+
+    @Command(name = "setcompactionthreshold", description = "Set min and max compaction thresholds for a given column family")
+    public static class SetCompactionThreshold extends NodeToolCmd
+    {
+        @Arguments(title = "<keyspace> <cfname> <minthreshold> <maxthreshold>", usage = "<keyspace> <cfname> <minthreshold> <maxthreshold>", description = "The keyspace, the column family, min and max threshold", required = true)
+        private List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkArgument(args.size() == 4, "setcompactionthreshold requires ks, cf, min, and max threshold args.");
+
+            int minthreshold = parseInt(args.get(2));
+            int maxthreshold = parseInt(args.get(3));
+            checkArgument(minthreshold >= 0 && maxthreshold >= 0, "Thresholds must be positive integers");
+            checkArgument(minthreshold <= maxthreshold, "Min threshold cannot be greater than max.");
+            checkArgument(minthreshold >= 2 || maxthreshold == 0, "Min threshold must be at least 2");
+
+            probe.setCompactionThreshold(args.get(0), args.get(1), minthreshold, maxthreshold);
+        }
+    }
+
+    @Command(name = "setcompactionthroughput", description = "Set the MB/s throughput cap for compaction in the system, or 0 to disable throttling")
+    public static class SetCompactionThroughput extends NodeToolCmd
+    {
+        @Arguments(title = "compaction_throughput", usage = "<value_in_mb>", description = "Value in MB, 0 to disable throttling", required = true)
+        private Integer compactionThroughput = null;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.setCompactionThroughput(compactionThroughput);
+        }
+    }
+
+    @Command(name = "setstreamthroughput", description = "Set the MB/s throughput cap for streaming in the system, or 0 to disable throttling")
+    public static class SetStreamThroughput extends NodeToolCmd
+    {
+        @Arguments(title = "stream_throughput", usage = "<value_in_mb>", description = "Value in MB, 0 to disable throttling", required = true)
+        private Integer streamThroughput = null;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.setStreamThroughput(streamThroughput);
+        }
+    }
+
+    @Command(name = "settraceprobability", description = "Sets the probability for tracing any given request to value. 0 disables, 1 enables for all requests, 0 is the default")
+    public static class SetTraceProbability extends NodeToolCmd
+    {
+        @Arguments(title = "trace_probability", usage = "<value>", description = "Trace probability between 0 and 1 (ex: 0.2)", required = true)
+        private Double traceProbability = null;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkArgument(traceProbability >= 0 && traceProbability <= 1, "Trace probability must be between 0 and 1");
+            probe.setTraceProbability(traceProbability);
+        }
+    }
+
+    @Command(name = "snapshot", description = "Take a snapshot of specified keyspaces or a snapshot of the specified column family")
+    public static class Snapshot extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspaces...>]", description = "List of keyspaces. By default, all keyspaces")
+        private List<String> keyspaces = new ArrayList<>();
+
+        @Option(title = "cfname", name = {"-cf", "--column-family"}, description = "The column family name (you must specify one and only one keyspace for using this option)")
+        private String columnFamily = null;
+
+        @Option(title = "tag", name = {"-t", "--tag"}, description = "The name of the snapshot")
+        private String snapshotName = Long.toString(System.currentTimeMillis());
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            try
+            {
+                StringBuilder sb = new StringBuilder();
+
+                sb.append("Requested creating snapshot(s) for ");
+
+                if (keyspaces.isEmpty())
+                    sb.append("[all keyspaces]");
+                else
+                    sb.append("[").append(join(keyspaces, ", ")).append("]");
+
+                if (!snapshotName.isEmpty())
+                    sb.append(" with snapshot name [").append(snapshotName).append("]");
+
+                System.out.println(sb.toString());
+
+                probe.takeSnapshot(snapshotName, columnFamily, toArray(keyspaces, String.class));
+                System.out.println("Snapshot directory: " + snapshotName);
+            } catch (IOException e)
+            {
+                throw new RuntimeException("Error during taking a snapshot", e);
+            }
+        }
+    }
+
+    @Command(name = "status", description = "Print cluster information (state, load, IDs, ...)")
+    public static class Status extends NodeToolCmd
+    {
+        @Arguments(usage = "[<keyspace>]", description = "The keyspace name")
+        private String keyspace = null;
+
+        @Option(title = "resolve_ip", name = {"-r", "--resolve-ip"}, description = "Show node domain names instead of IPs")
+        private boolean resolveIp = false;
+
+        private boolean hasEffectiveOwns = false;
+        private boolean isTokenPerNode = true;
+        private int maxAddressLength = 0;
+        private String format = null;
+        private Collection<String> joiningNodes, leavingNodes, movingNodes, liveNodes, unreachableNodes;
+        private Map<String, String> loadMap, hostIDMap, tokensToEndpoints;
+        private EndpointSnitchInfoMBean epSnitchInfo;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            joiningNodes = probe.getJoiningNodes();
+            leavingNodes = probe.getLeavingNodes();
+            movingNodes = probe.getMovingNodes();
+            loadMap = probe.getLoadMap();
+            tokensToEndpoints = probe.getTokenToEndpointMap();
+            liveNodes = probe.getLiveNodes();
+            unreachableNodes = probe.getUnreachableNodes();
+            hostIDMap = probe.getHostIdMap();
+            epSnitchInfo = probe.getEndpointSnitchInfoProxy();
+
+            SetHostStat ownerships;
+            try
+            {
+                ownerships = new SetHostStat(probe.effectiveOwnership(keyspace));
+                hasEffectiveOwns = true;
+            } catch (IllegalStateException e)
+            {
+                ownerships = new SetHostStat(probe.getOwnership());
+            }
+
+            // More tokens then nodes (aka vnodes)?
+            if (new HashSet<>(tokensToEndpoints.values()).size() < tokensToEndpoints.keySet().size())
+                isTokenPerNode = false;
+
+            Map<String, SetHostStat> dcs = getOwnershipByDc(probe, ownerships);
+
+            findMaxAddressLength(dcs);
+
+            // Datacenters
+            for (Map.Entry<String, SetHostStat> dc : dcs.entrySet())
+            {
+                String dcHeader = String.format("Datacenter: %s%n", dc.getKey());
+                System.out.printf(dcHeader);
+                for (int i = 0; i < (dcHeader.length() - 1); i++) System.out.print('=');
+                System.out.println();
+
+                // Legend
+                System.out.println("Status=Up/Down");
+                System.out.println("|/ State=Normal/Leaving/Joining/Moving");
+
+                printNodesHeader(hasEffectiveOwns, isTokenPerNode);
+
+                // Nodes
+                for (HostStat entry : dc.getValue())
+                    printNode(probe, entry, hasEffectiveOwns, isTokenPerNode);
+            }
+
+        }
+
+        private void findMaxAddressLength(Map<String, SetHostStat> dcs)
+        {
+            maxAddressLength = 0;
+            for (Map.Entry<String, SetHostStat> dc : dcs.entrySet())
+            {
+                for (HostStat stat : dc.getValue())
+                {
+                    maxAddressLength = Math.max(maxAddressLength, stat.ipOrDns().length());
+                }
+            }
+        }
+
+        private void printNodesHeader(boolean hasEffectiveOwns, boolean isTokenPerNode)
+        {
+            String fmt = getFormat(hasEffectiveOwns, isTokenPerNode);
+            String owns = hasEffectiveOwns ? "Owns (effective)" : "Owns";
+
+            if (isTokenPerNode)
+                System.out.printf(fmt, "-", "-", "Address", "Load", owns, "Host ID", "Token", "Rack");
+            else
+                System.out.printf(fmt, "-", "-", "Address", "Load", "Tokens", owns, "Host ID", "Rack");
+        }
+
+        private void printNode(NodeProbe probe, HostStat hostStat, boolean hasEffectiveOwns, boolean isTokenPerNode)
+        {
+            String status, state, load, strOwns, hostID, rack, fmt;
+            fmt = getFormat(hasEffectiveOwns, isTokenPerNode);
+            String endpoint = hostStat.ip;
+            if (liveNodes.contains(endpoint)) status = "U";
+            else if (unreachableNodes.contains(endpoint)) status = "D";
+            else status = "?";
+            if (joiningNodes.contains(endpoint)) state = "J";
+            else if (leavingNodes.contains(endpoint)) state = "L";
+            else if (movingNodes.contains(endpoint)) state = "M";
+            else state = "N";
+
+            load = loadMap.containsKey(endpoint) ? loadMap.get(endpoint) : "?";
+            strOwns = new DecimalFormat("##0.0%").format(hostStat.owns);
+            hostID = hostIDMap.get(endpoint);
+
+            try
+            {
+                rack = epSnitchInfo.getRack(endpoint);
+            } catch (UnknownHostException e)
+            {
+                throw new RuntimeException(e);
+            }
+
+            if (isTokenPerNode)
+            {
+                System.out.printf(fmt, status, state, hostStat.ipOrDns(), load, strOwns, hostID, probe.getTokens(endpoint).get(0), rack);
+            } else
+            {
+                int tokens = probe.getTokens(endpoint).size();
+                System.out.printf(fmt, status, state, hostStat.ipOrDns(), load, tokens, strOwns, hostID, rack);
+            }
+        }
+
+        private String getFormat(
+                boolean hasEffectiveOwns,
+                boolean isTokenPerNode)
+        {
+            if (format == null)
+            {
+                StringBuilder buf = new StringBuilder();
+                String addressPlaceholder = String.format("%%-%ds  ", maxAddressLength);
+                buf.append("%s%s  ");                         // status
+                buf.append(addressPlaceholder);               // address
+                buf.append("%-9s  ");                         // load
+                if (!isTokenPerNode)
+                    buf.append("%-6s  ");                     // "Tokens"
+                if (hasEffectiveOwns)
+                    buf.append("%-16s  ");                    // "Owns (effective)"
+                else
+                    buf.append("%-6s  ");                     // "Owns
+                buf.append("%-36s  ");                        // Host ID
+                if (isTokenPerNode)
+                    buf.append("%-39s  ");                    // token
+                buf.append("%s%n");                           // "Rack"
+
+                format = buf.toString();
+            }
+
+            return format;
+        }
+
+        private Map<String, SetHostStat> getOwnershipByDc(NodeProbe probe, SetHostStat ownerships)
+        {
+            Map<String, SetHostStat> ownershipByDc = Maps.newLinkedHashMap();
+            EndpointSnitchInfoMBean epSnitchInfo = probe.getEndpointSnitchInfoProxy();
+
+            try
+            {
+                for (HostStat ownership : ownerships)
+                {
+                    String dc = epSnitchInfo.getDatacenter(ownership.ip);
+                    if (!ownershipByDc.containsKey(dc))
+                        ownershipByDc.put(dc, new SetHostStat());
+                    ownershipByDc.get(dc).add(ownership);
+                }
+            } catch (UnknownHostException e)
+            {
+                throw new RuntimeException(e);
+            }
+
+            return ownershipByDc;
+        }
+
+        class SetHostStat implements Iterable<HostStat>
+        {
+            final List<HostStat> hostStats = new ArrayList<>();
+
+            public SetHostStat()
+            {
+            }
+
+            public SetHostStat(Map<InetAddress, Float> ownerships)
+            {
+                for (Map.Entry<InetAddress, Float> entry : ownerships.entrySet())
+                {
+                    hostStats.add(new HostStat(entry));
+                }
+            }
+
+            @Override
+            public Iterator<HostStat> iterator()
+            {
+                return hostStats.iterator();
+            }
+
+            public void add(HostStat entry)
+            {
+                hostStats.add(entry);
+            }
+        }
+
+        class HostStat
+        {
+            public final String ip;
+            public final String dns;
+            public final Float owns;
+
+            public HostStat(Map.Entry<InetAddress, Float> ownership)
+            {
+                this.ip = ownership.getKey().getHostAddress();
+                this.dns = ownership.getKey().getHostName();
+                this.owns = ownership.getValue();
+            }
+
+            public String ipOrDns()
+            {
+                if (resolveIp)
+                {
+                    return dns;
+                }
+                return ip;
+            }
+        }
+    }
+
+    @Command(name = "statusbinary", description = "Status of native transport (binary protocol)")
+    public static class StatusBinary extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.out.println(
+                    probe.isNativeTransportRunning()
+                    ? "running"
+                    : "not running");
+        }
+    }
+
+    @Command(name = "statusthrift", description = "Status of thrift server")
+    public static class StatusThrift extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.out.println(
+                    probe.isThriftServerRunning()
+                    ? "running"
+                    : "not running");
+        }
+    }
+
+    @Command(name = "stop", description = "Stop compaction")
+    public static class Stop extends NodeToolCmd
+    {
+        @Arguments(title = "compaction_type", usage = "<compaction type>", description = "Supported types are COMPACTION, VALIDATION, CLEANUP, SCRUB, INDEX_BUILD", required = true)
+        private OperationType compactionType = OperationType.UNKNOWN;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.stop(compactionType.name());
+        }
+    }
+
+    @Command(name = "stopdaemon", description = "Stop cassandra daemon")
+    public static class StopDaemon extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            try
+            {
+                probe.stopCassandraDaemon();
+            } catch (Exception ignored)
+            {
+                // ignored
+            }
+            System.out.println("Cassandra has shutdown.");
+        }
+    }
+
+    @Command(name = "version", description = "Print cassandra version")
+    public static class Version extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.out.println("ReleaseVersion: " + probe.getReleaseVersion());
+        }
+    }
+
+    @Command(name = "describering", description = "Shows the token ranges info of a given keyspace")
+    public static class DescribeRing extends NodeToolCmd
+    {
+        @Arguments(description = "The keyspace name", required = true)
+        String keyspace = EMPTY;
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.out.println("Schema Version:" + probe.getSchemaVersion());
+            System.out.println("TokenRange: ");
+            try
+            {
+                for (String tokenRangeString : probe.describeRing(keyspace))
+                {
+                    System.out.println("\t" + tokenRangeString);
+                }
+            } catch (IOException e)
+            {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    @Command(name = "rangekeysample", description = "Shows the sampled keys held across all keyspaces")
+    public static class RangeKeySample extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            System.out.println("RangeKeySample: ");
+            List<String> tokenStrings = probe.sampleKeyRange();
+            for (String tokenString : tokenStrings)
+            {
+                System.out.println("\t" + tokenString);
+            }
+        }
+    }
+
+    @Command(name = "rebuild_index", description = "A full rebuilds of native secondry index for a given column family")
+    public static class RebuildIndex extends NodeToolCmd
+    {
+        @Arguments(usage = "<keyspace> <cfname> [<indexName...>]", description = "The keyspace and column family name followed by an optional list of index names (IndexNameExample: Standard3.IdxName Standard3.IdxName1)")
+        List<String> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkArgument(args.size() >= 2, "rebuild_index requires ks and cf args");
+
+            List<String> indexNames = new ArrayList<>();
+            if (args.size() > 2)
+            {
+                indexNames.addAll(args.subList(2, args.size()));
+            }
+
+            probe.rebuildIndex(args.get(0), args.get(1), toArray(indexNames, String.class));
+        }
+    }
+
+    @Command(name = "resetlocalschema", description = "Reset node's local schema and resync")
+    public static class ResetLocalSchema extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            try
+            {
+                probe.resetLocalSchema();
+            } catch (IOException e)
+            {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    @Command(name = "enablebackup", description = "Enable incremental backup")
+    public static class EnableBackup extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.setIncrementalBackupsEnabled(true);
+        }
+    }
+
+    @Command(name = "disablebackup", description = "Disable incremental backup")
+    public static class DisableBackup extends NodeToolCmd
+    {
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            probe.setIncrementalBackupsEnabled(false);
+        }
+    }
+
+    @Command(name = "setcachekeystosave", description = "Set number of keys saved by each cache for faster post-restart warmup. 0 to disable")
+    public static class SetCacheKeysToSave extends NodeToolCmd
+    {
+        @Arguments(title = "<key-cache-keys-to-save> <row-cache-keys-to-save>", usage = "<key-cache-keys-to-save> <row-cache-keys-to-save>", description = "The number of keys saved by each cache. 0 to disable", required = true)
+        private List<Integer> args = new ArrayList<>();
+
+        @Override
+        public void execute(NodeProbe probe)
+        {
+            checkArgument(args.size()

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