Java HRegionInfo.getReplicaId方法代碼示例

import org.apache.hadoop.hbase.HRegionInfo; //導入方法依賴的package包/類
@Override public WAL getWAL(HRegionInfo regionInfo) throws IOException {
  WAL wal;
  LogRoller roller = walRoller;
  //_ROOT_ and hbase:meta regions have separate WAL.
  if (regionInfo != null && regionInfo.isMetaTable()
      && regionInfo.getReplicaId() == HRegionInfo.DEFAULT_REPLICA_ID) {
    roller = ensureMetaWALRoller();
    wal = walFactory.getMetaWAL(regionInfo.getEncodedNameAsBytes());
  } else if (regionInfo == null) {
    wal = walFactory.getWAL(UNSPECIFIED_REGION);
  } else {
    wal = walFactory.getWAL(regionInfo.getEncodedNameAsBytes());
  }
  roller.addWAL(wal);
  return wal;
}
 

import org.apache.hadoop.hbase.HRegionInfo; //導入方法依賴的package包/類
public RegionReplicaReplayCallable(ClusterConnection connection,
    RpcControllerFactory rpcControllerFactory, TableName tableName,
    HRegionLocation location, HRegionInfo regionInfo, byte[] row,List<Entry> entries,
    AtomicLong skippedEntries) {
  super(connection, rpcControllerFactory, location, tableName, row, regionInfo.getReplicaId());
  this.entries = entries;
  this.skippedEntries = skippedEntries;
  this.initialEncodedRegionName = regionInfo.getEncodedNameAsBytes();
}
 

import org.apache.hadoop.hbase.HRegionInfo; //導入方法依賴的package包/類
public synchronized void addServer(HRegionInfo hri, ServerName server) {
  OnlineEntry rse = new OnlineEntry() ;
  rse.hri = hri;
  rse.hsa = server;
  this.deployedEntries.add(rse);
  this.deployedOn.add(server);
  // save the replicaId that we see deployed in the cluster
  this.deployedReplicaId = hri.getReplicaId();
  this.primaryHRIForDeployedReplica =
      RegionReplicaUtil.getRegionInfoForDefaultReplica(hri);
}
 

import org.apache.hadoop.hbase.HRegionInfo; //導入方法依賴的package包/類
@Override
public void postWALWrite(ObserverContext<? extends WALCoprocessorEnvironment> ctx,
    HRegionInfo info, WALKey logKey, WALEdit logEdit) throws IOException {
  // only keep primary region's edits
  if (logKey.getTablename().equals(tableName) && info.getReplicaId() == 0) {
    entries.add(new Entry(logKey, logEdit));
  }
}
 

import org.apache.hadoop.hbase.HRegionInfo; //導入方法依賴的package包/類
/**
 * Check if a region belongs to some small system table.
 * If so, the primary replica may be expected to be put on the master regionserver.
 */
public boolean shouldBeOnMaster(HRegionInfo region) {
  return tablesOnMaster.contains(region.getTable().getNameAsString())
      && region.getReplicaId() == HRegionInfo.DEFAULT_REPLICA_ID;
}
 

import org.apache.hadoop.hbase.HRegionInfo; //導入方法依賴的package包/類
@Test
public void testHbckWithExcessReplica() throws Exception {
  TableName table =
      TableName.valueOf("testHbckWithExcessReplica");
  try {
    setupTableWithRegionReplica(table, 2);
    TEST_UTIL.getHBaseAdmin().flush(table.getName());
    assertNoErrors(doFsck(conf, false));
    assertEquals(ROWKEYS.length, countRows());
    // the next few lines inject a location in meta for a replica, and then
    // asks the master to assign the replica (the meta needs to be injected
    // for the master to treat the request for assignment as valid; the master
    // checks the region is valid either from its memory or meta)
    HTable meta = new HTable(conf, TableName.META_TABLE_NAME);
    List<HRegionInfo> regions = TEST_UTIL.getHBaseAdmin().getTableRegions(table);
    byte[] startKey = Bytes.toBytes("B");
    byte[] endKey = Bytes.toBytes("C");
    byte[] metaKey = null;
    HRegionInfo newHri = null;
    for (HRegionInfo h : regions) {
      if (Bytes.compareTo(h.getStartKey(), startKey) == 0  &&
          Bytes.compareTo(h.getEndKey(), endKey) == 0 &&
          h.getReplicaId() == HRegionInfo.DEFAULT_REPLICA_ID) {
        metaKey = h.getRegionName();
        //create a hri with replicaId as 2 (since we already have replicas with replicaid 0 and 1)
        newHri = RegionReplicaUtil.getRegionInfoForReplica(h, 2);
        break;
      }
    }
    Put put = new Put(metaKey);
    ServerName sn = TEST_UTIL.getHBaseAdmin().getClusterStatus().getServers()
        .toArray(new ServerName[0])[0];
    //add a location with replicaId as 2 (since we already have replicas with replicaid 0 and 1)
    MetaTableAccessor.addLocation(put, sn, sn.getStartcode(), -1, 2);
    meta.put(put);
    meta.flushCommits();
    // assign the new replica
    HBaseFsckRepair.fixUnassigned((HBaseAdmin)TEST_UTIL.getHBaseAdmin(), newHri);
    HBaseFsckRepair.waitUntilAssigned((HBaseAdmin)TEST_UTIL.getHBaseAdmin(), newHri);
    // now reset the meta row to its original value
    Delete delete = new Delete(metaKey);
    delete.deleteColumns(HConstants.CATALOG_FAMILY, MetaTableAccessor.getServerColumn(2));
    delete.deleteColumns(HConstants.CATALOG_FAMILY, MetaTableAccessor.getStartCodeColumn(2));
    delete.deleteColumns(HConstants.CATALOG_FAMILY, MetaTableAccessor.getSeqNumColumn(2));
    meta.delete(delete);
    meta.flushCommits();
    meta.close();
    // check that problem exists
    HBaseFsck hbck = doFsck(conf, false);
    assertErrors(hbck, new ERROR_CODE[]{ERROR_CODE.NOT_IN_META});
    // fix the problem
    hbck = doFsck(conf, true);
    // run hbck again to make sure we don't see any errors
    hbck = doFsck(conf, false);
    assertErrors(hbck, new ERROR_CODE[]{});
  } finally {
    cleanupTable(table);
  }
}
 

import org.apache.hadoop.hbase.HRegionInfo; //導入方法依賴的package包/類
/** @return true if this region is a default replica for the region */
public static boolean isDefaultReplica(HRegionInfo hri) {
  return  hri.getReplicaId() == DEFAULT_REPLICA_ID;
}