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From e..@apache.org
Subject [09/14] git commit: Merge branch '1.4.5-SNAPSHOT' into 1.5.1-SNAPSHOT
Date Tue, 17 Dec 2013 19:04:09 GMT
Merge branch '1.4.5-SNAPSHOT' into 1.5.1-SNAPSHOT


Project: http://git-wip-us.apache.org/repos/asf/accumulo/repo
Commit: http://git-wip-us.apache.org/repos/asf/accumulo/commit/3458bfae
Tree: http://git-wip-us.apache.org/repos/asf/accumulo/tree/3458bfae
Diff: http://git-wip-us.apache.org/repos/asf/accumulo/diff/3458bfae

Branch: refs/heads/master
Commit: 3458bfaec1ada8a164e596ac132939e370e52f86
Parents: a78246d 59932f6
Author: Eric Newton <eric.newton@gmail.com>
Authored: Tue Dec 17 14:02:33 2013 -0500
Committer: Eric Newton <eric.newton@gmail.com>
Committed: Tue Dec 17 14:02:33 2013 -0500

----------------------------------------------------------------------
 .../apache/accumulo/server/master/state/MetaDataTableScanner.java   | 1 +
 1 file changed, 1 insertion(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/accumulo/blob/3458bfae/server/src/main/java/org/apache/accumulo/server/master/state/MetaDataTableScanner.java
----------------------------------------------------------------------
diff --cc server/src/main/java/org/apache/accumulo/server/master/state/MetaDataTableScanner.java
index 7570908,0000000..bf1da22
mode 100644,000000..100644
--- a/server/src/main/java/org/apache/accumulo/server/master/state/MetaDataTableScanner.java
+++ b/server/src/main/java/org/apache/accumulo/server/master/state/MetaDataTableScanner.java
@@@ -1,184 -1,0 +1,185 @@@
 +/*
 + * 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.accumulo.server.master.state;
 +
 +import java.io.IOException;
 +import java.util.ArrayList;
 +import java.util.Arrays;
 +import java.util.Collection;
 +import java.util.Collections;
 +import java.util.Iterator;
 +import java.util.List;
 +import java.util.Map.Entry;
 +import java.util.SortedMap;
 +
 +import org.apache.accumulo.core.Constants;
 +import org.apache.accumulo.core.client.BatchScanner;
 +import org.apache.accumulo.core.client.Connector;
 +import org.apache.accumulo.core.client.Instance;
 +import org.apache.accumulo.core.client.IteratorSetting;
 +import org.apache.accumulo.core.client.ScannerBase;
 +import org.apache.accumulo.core.data.Key;
 +import org.apache.accumulo.core.data.KeyExtent;
 +import org.apache.accumulo.core.data.Range;
 +import org.apache.accumulo.core.data.Value;
 +import org.apache.accumulo.core.iterators.user.WholeRowIterator;
 +import org.apache.accumulo.core.security.CredentialHelper;
 +import org.apache.accumulo.core.security.thrift.TCredentials;
 +import org.apache.accumulo.server.master.state.TabletLocationState.BadLocationStateException;
 +import org.apache.hadoop.io.Text;
 +import org.apache.log4j.Logger;
 +
 +public class MetaDataTableScanner implements Iterator<TabletLocationState> {
 +  private static final Logger log = Logger.getLogger(MetaDataTableScanner.class);
 +  
 +  BatchScanner mdScanner;
 +  Iterator<Entry<Key,Value>> iter;
 +  
 +  public MetaDataTableScanner(Instance instance, TCredentials auths, Range range, CurrentState
state) {
 +    // scan over metadata table, looking for tablets in the wrong state based on the live
servers and online tables
 +    try {
 +      Connector connector = instance.getConnector(auths.getPrincipal(), CredentialHelper.extractToken(auths));
 +      mdScanner = connector.createBatchScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS,
8);
 +      configureScanner(mdScanner, state);
 +      mdScanner.setRanges(Collections.singletonList(range));
 +      iter = mdScanner.iterator();
 +    } catch (Exception ex) {
 +      mdScanner.close();
 +      throw new RuntimeException(ex);
 +    }
 +  }
 +
 +  static public void configureScanner(ScannerBase scanner, CurrentState state) {
 +    Constants.METADATA_PREV_ROW_COLUMN.fetch(scanner);
 +    scanner.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);
 +    scanner.fetchColumnFamily(Constants.METADATA_FUTURE_LOCATION_COLUMN_FAMILY);
++    scanner.fetchColumnFamily(Constants.METADATA_LAST_LOCATION_COLUMN_FAMILY);
 +    scanner.fetchColumnFamily(Constants.METADATA_LOG_COLUMN_FAMILY);
 +    scanner.fetchColumnFamily(Constants.METADATA_CHOPPED_COLUMN_FAMILY);
 +    scanner.addScanIterator(new IteratorSetting(1000, "wholeRows", WholeRowIterator.class));
 +    IteratorSetting tabletChange = new IteratorSetting(1001, "tabletChange", TabletStateChangeIterator.class);
 +    if (state != null) {
 +      TabletStateChangeIterator.setCurrentServers(tabletChange, state.onlineTabletServers());
 +      TabletStateChangeIterator.setOnlineTables(tabletChange, state.onlineTables());
 +      TabletStateChangeIterator.setMerges(tabletChange, state.merges());
 +    }
 +    scanner.addScanIterator(tabletChange);
 +  }
 +  
 +  public MetaDataTableScanner(Instance instance, TCredentials auths, Range range) {
 +    this(instance, auths, range, null);
 +  }
 +  
 +  public void close() {
 +    if (iter != null) {
 +      mdScanner.close();
 +      iter = null;
 +    }
 +  }
 +  
 +  public void finalize() {
 +    close();
 +  }
 +  
 +  @Override
 +  public boolean hasNext() {
 +    if (iter == null)
 +      return false;
 +    boolean result = iter.hasNext();
 +    if (!result) {
 +      close();
 +    }
 +    return result;
 +  }
 +  
 +  @Override
 +  public TabletLocationState next() {
 +    try {
 +      return fetch();
 +    } catch (RuntimeException ex) {
 +      // something is wrong with the records in the !METADATA table, just skip over it
 +      log.error(ex, ex);
 +      mdScanner.close();
 +      return null;
 +    } 
 +  }
 +  
 +  public static TabletLocationState createTabletLocationState(Key k, Value v) throws IOException,
BadLocationStateException {
 +    final SortedMap<Key,Value> decodedRow = WholeRowIterator.decodeRow(k, v);
 +    KeyExtent extent = null;
 +    TServerInstance future = null;
 +    TServerInstance current = null;
 +    TServerInstance last = null;
 +    List<Collection<String>> walogs = new ArrayList<Collection<String>>();
 +    boolean chopped = false;
 +    
 +    for (Entry<Key,Value> entry : decodedRow.entrySet()) {
 +      Key key = entry.getKey();
 +      Text row = key.getRow();
 +      Text cf = key.getColumnFamily();
 +      Text cq = key.getColumnQualifier();
 +      
 +      if (cf.compareTo(Constants.METADATA_FUTURE_LOCATION_COLUMN_FAMILY) == 0) {
 +        TServerInstance location = new TServerInstance(entry.getValue(), cq);
 +        if (future != null) {
 +          throw new BadLocationStateException("found two assignments for the same extent
" + key.getRow() + ": " + future + " and " + location);
 +        }
 +        future = location;
 +      } else if (cf.compareTo(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY) == 0) {
 +        TServerInstance location = new TServerInstance(entry.getValue(), cq);
 +        if (current != null) {
 +          throw new BadLocationStateException("found two locations for the same extent "
+ key.getRow() + ": " + current + " and " + location);
 +        }
 +        current = location;
 +      } else if (cf.compareTo(Constants.METADATA_LOG_COLUMN_FAMILY) == 0) {
 +        String[] split = entry.getValue().toString().split("\\|")[0].split(";");
 +        walogs.add(Arrays.asList(split));
 +      } else if (cf.compareTo(Constants.METADATA_LAST_LOCATION_COLUMN_FAMILY) == 0) {
 +        TServerInstance location = new TServerInstance(entry.getValue(), cq);
 +        if (last != null) {
 +          throw new BadLocationStateException("found two last locations for the same extent
" + key.getRow() + ": " + last + " and " + location);
 +        }
 +        last = new TServerInstance(entry.getValue(), cq);
 +      } else if (cf.compareTo(Constants.METADATA_CHOPPED_COLUMN_FAMILY) == 0) {
 +        chopped = true;
 +      } else if (Constants.METADATA_PREV_ROW_COLUMN.equals(cf, cq)) {
 +        extent = new KeyExtent(row, entry.getValue());
 +      }
 +    }
 +    if (extent == null) {
 +      log.warn("No prev-row for key extent: " + decodedRow);
 +      return null;
 +    }
 +    return new TabletLocationState(extent, future, current, last, walogs, chopped);
 +  }
 +  
 +  private TabletLocationState fetch() {
 +    try {
 +      Entry<Key,Value> e = iter.next();
 +      return createTabletLocationState(e.getKey(), e.getValue());
 +    } catch (IOException ex) {
 +      throw new RuntimeException(ex);
 +    } catch (BadLocationStateException ex) {
 +      throw new RuntimeException(ex);
 +    } 
 +  }
 +  
 +  @Override
 +  public void remove() {
 +    throw new RuntimeException("Unimplemented");
 +  }
 +}


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