cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From jbel...@apache.org
Subject [6/8] Merge branch 'cassandra-2.0' into cassandra-2.1
Date Tue, 18 Feb 2014 17:22:52 GMT
http://git-wip-us.apache.org/repos/asf/cassandra/blob/f628bd8a/src/java/org/apache/cassandra/tools/NodeTool.java
----------------------------------------------------------------------
diff --cc src/java/org/apache/cassandra/tools/NodeTool.java
index 94bce74,0000000..453491b
mode 100644,000000..100644
--- a/src/java/org/apache/cassandra/tools/NodeTool.java
+++ b/src/java/org/apache/cassandra/tools/NodeTool.java
@@@ -1,2248 -1,0 +1,2255 @@@
 +/*
 + * 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.io.util.FileUtils;
 +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,
 +                InvalidateCounterCache.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,
 +                ListSnapshots.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,
 +                TakeToken.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());
 +
 +            // Counter 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",
 +                    "Counter Cache",
 +                    probe.getCacheMetric("CounterCache", "Entries"),
 +                    probe.getCacheMetric("CounterCache", "Size"),
 +                    probe.getCacheMetric("CounterCache", "Capacity"),
 +                    probe.getCacheMetric("CounterCache", "Hits"),
 +                    probe.getCacheMetric("CounterCache", "Requests"),
 +                    probe.getCacheMetric("CounterCache", "HitRate"),
 +                    cacheService.getCounterCacheSavePeriodInSeconds());
 +
 +            // 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;
 +
 +        @Option(title = "skip_corrupted",
 +                name = {"-s", "--skip-corrupted"},
 +                description = "Skip corrupted partitions even when scrubbing counter tables. (default false)")
 +        private boolean skipCorrupted = 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, skipCorrupted, 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, Object.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
 +    {
++        @Arguments(usage = "<dc-name>,<dc-name>", description = "Enable hinted handoff only for these DCs")
++        private List<String> args = new ArrayList<>();
++
 +        @Override
 +        public void execute(NodeProbe probe)
 +        {
-             probe.enableHintedHandoff();
++            checkArgument(args.size() <= 1, "enablehandoff does not accept two args");
++            if(args.size() == 1)
++                probe.enableHintedHandoff(args.get(0));
++            else
++                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 = "invalidatecountercache", description = "Invalidate the counter cache")
 +    public static class InvalidateCounterCache extends NodeToolCmd
 +    {
 +        @Override
 +        public void execute(NodeProbe probe)
 +        {
 +            probe.invalidateCounterCache();
 +        }
 +    }
 +
 +    @Command(name = "taketoken", description = "Move the token(s) from the existing owner(s) to this node.  For vnodes only.  Use \\\\ to escape negative tokens.")
 +    public static class TakeToken extends NodeToolCmd
 +    {
 +        @Arguments(usage = "<token, ...>", description = "Token(s) to take", required = true)
 +        private List<String> tokens = new ArrayList<String>();
 +
 +        @Override
 +        public void execute(NodeProbe probe)
 +        {
 +            try
 +            {
 +                probe.takeTokens(tokens);
 +            }
 +            catch (IOException e)
 +            {
 +                throw new RuntimeException("Error taking tokens", e);
 +            }
 +        }
 +    }
 +
 +    @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 = "Show status of current node removal, force completion of pending removal, or remove provided ID", 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;
 +
 +        @Option(title = "incremental_repair", name = {"-inc", "--incremental"}, description = "Use -inc to use the new incremental repair")
 +        private boolean incrementalRepair = 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, !incrementalRepair);
 +                    else
 +                        probe.forceRepairAsync(System.out, keyspace, !parallel, dataCenters, primaryRange, !incrementalRepair, cfnames);
 +                } catch (Exception e)
 +                {
 +                    throw new RuntimeException("Error occurred during repair", e);
 +                }
 +            }
 +        }
 +    }
 +
 +    @Command(name = "setcachecapacity", description = "Set global key, row, and counter cache capacities (in MB units)")
 +    public static class SetCacheCapacity extends NodeToolCmd
 +    {
 +        @Arguments(title = "<key-cache-capacity> <row-cache-capacity> <counter-cache-capacity>",
 +                   usage = "<key-cache-capacity> <row-cache-capacity> <counter-cache-capacity>",
 +                   description = "Key cache, row cache, and counter cache (in MB)",
 +                   required = true)
 +        private List<Integer> args = new ArrayList<>();
 +
 +        @Override
 +        public void execute(NodeProbe probe)
 +        {
 +            checkArgument(args.size() == 3, "setcachecapacity requires key-cache-capacity, row-cache-capacity, and counter-cache-capacity args.");
 +            probe.setCacheCapacities(args.get(0), args.get(1), args.get(2));
 +        }
 +    }
 +
 +    @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 = "listsnapshots", description = "Lists all the snapshots along with the size on disk and true size.")
 +    public static class ListSnapshots extends NodeToolCmd
 +    {
 +        @Override
 +        public void execute(NodeProbe probe)
 +        {
 +            try
 +            {
 +                System.out.println("Snapshot Details: ");
 +
 +                final Map<String,TabularData> snapshotDetails = probe.getSnapshotDetails();
 +                if (snapshotDetails.isEmpty())
 +                {
 +                    System.out.printf("There are no snapshots");
 +                    return;
 +                }
 +
 +                final long trueSnapshotsSize = probe.trueSnapshotsSize();
 +                final String format = "%-20s%-29s%-29s%-19s%-19s%n";
 +                // display column names only once
 +                final List<String> indexNames = snapshotDetails.entrySet().iterator().next().getValue().getTabularType().getIndexNames();
 +                System.out.printf(format, (Object[]) indexNames.toArray(new String[indexNames.size()]));
 +
 +                for (final Map.Entry<String, TabularData> snapshotDetail : snapshotDetails.entrySet())
 +                {
 +                    Set<?> values = snapshotDetail.getValue().keySet();
 +                    for (Object eachValue : values)
 +                    {
 +                        final List<?> value = (List<?>) eachValue;
 +                        System.out.printf(format, value.toArray(new Object[value.size()]));
 +                    }
 +                }
 +
 +                System.out.println("\nTotal TrueDiskSpaceUsed: " + FileUtils.stringifyFileSize(trueSnapshotsSize) + "\n");
 +            }
 +            catch (Exception e)
 +            {
 +                throw new RuntimeException("Error during list 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

<TRUNCATED>

Mime
View raw message