Java Code Examples for org.apache.hadoop.hbase.MetaTableAccessor#putsToMetaTable()

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Example 1
Source File: FavoredNodeAssignmentHelper.java    From hbase with Apache License 2.0 5 votes vote down vote up 
/**
 * Update meta table with favored nodes info
 * @param regionToFavoredNodes map of RegionInfo's to their favored nodes
 * @param connection connection to be used
 * @throws IOException
 */
public static void updateMetaWithFavoredNodesInfo(
    Map<RegionInfo, List<ServerName>> regionToFavoredNodes,
    Connection connection) throws IOException {
  List<Put> puts = new ArrayList<>();
  for (Map.Entry<RegionInfo, List<ServerName>> entry : regionToFavoredNodes.entrySet()) {
    Put put = makePutFromRegionInfo(entry.getKey(), entry.getValue());
    if (put != null) {
      puts.add(put);
    }
  }
  MetaTableAccessor.putsToMetaTable(connection, puts);
  LOG.info("Added " + puts.size() + " regions in META");
}
Example 2
Source File: MasterRpcServices.java    From hbase with Apache License 2.0 5 votes vote down vote up 
/**
 * Update state of the region in meta only. This is required by hbck in some situations to cleanup
 * stuck assign/ unassign regions procedures for the table.
 *
 * @return previous states of the regions
 */
@Override
public SetRegionStateInMetaResponse setRegionStateInMeta(RpcController controller,
  SetRegionStateInMetaRequest request) throws ServiceException {
  SetRegionStateInMetaResponse.Builder builder = SetRegionStateInMetaResponse.newBuilder();
  try {
    for (RegionSpecifierAndState s : request.getStatesList()) {
      RegionSpecifier spec = s.getRegionSpecifier();
      String encodedName;
      if (spec.getType() == RegionSpecifierType.ENCODED_REGION_NAME) {
        encodedName = spec.getValue().toStringUtf8();
      } else {
        // TODO: actually, a full region name can save a lot on meta scan, improve later.
        encodedName = RegionInfo.encodeRegionName(spec.getValue().toByteArray());
      }
      RegionInfo info = this.master.getAssignmentManager().loadRegionFromMeta(encodedName);
      LOG.trace("region info loaded from meta table: {}", info);
      RegionState prevState =
        this.master.getAssignmentManager().getRegionStates().getRegionState(info);
      RegionState.State newState = RegionState.State.convert(s.getState());
      LOG.info("{} set region={} state from {} to {}", master.getClientIdAuditPrefix(), info,
        prevState.getState(), newState);
      Put metaPut = MetaTableAccessor.makePutFromRegionInfo(info, System.currentTimeMillis());
      metaPut.addColumn(HConstants.CATALOG_FAMILY, HConstants.STATE_QUALIFIER,
        Bytes.toBytes(newState.name()));
      List<Put> putList = new ArrayList<>();
      putList.add(metaPut);
      MetaTableAccessor.putsToMetaTable(this.master.getConnection(), putList);
      // Loads from meta again to refresh AM cache with the new region state
      this.master.getAssignmentManager().loadRegionFromMeta(encodedName);
      builder.addStates(RegionSpecifierAndState.newBuilder().setRegionSpecifier(spec)
        .setState(prevState.getState().convert()));
    }
  } catch (Exception e) {
    throw new ServiceException(e);
  }
  return builder.build();
}
Example 3
Source File: TestMetaFixer.java    From hbase with Apache License 2.0 5 votes vote down vote up 
private static RegionInfo makeOverlap(MasterServices services, RegionInfo a, RegionInfo b)
    throws IOException {
  RegionInfo overlapRegion = RegionInfoBuilder.newBuilder(a.getTable()).
      setStartKey(a.getStartKey()).
      setEndKey(b.getEndKey()).
      build();
  MetaTableAccessor.putsToMetaTable(services.getConnection(),
      Collections.singletonList(MetaTableAccessor.makePutFromRegionInfo(overlapRegion,
          System.currentTimeMillis())));
  // TODO: Add checks at assign time to PREVENT being able to assign over existing assign.
  services.getAssignmentManager().assign(overlapRegion);
  return overlapRegion;
}