Package org.apache.hadoop.hbase

Examples of org.apache.hadoop.hbase.HRegionInfo

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   * (or null for server address if no address set in .META.).
   * @throws IOException
   */
  public static Pair<HRegionInfo, ServerName> parseCatalogResult(final Result r)
  throws IOException {
    HRegionInfo info =
      parseHRegionInfoFromCatalogResult(r, HConstants.REGIONINFO_QUALIFIER);
    ServerName sn = getServerNameFromCatalogResult(r);
    return new Pair<HRegionInfo, ServerName>(info, sn);
  }
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   * @param data a Result object from the catalog table scan
   * @return a pair of HRegionInfo or PairOfSameType(null, null) if the region is not a split
   * parent
   */
  public static PairOfSameType<HRegionInfo> getDaughterRegions(Result data) throws IOException {
    HRegionInfo splitA = Writables.getHRegionInfoOrNull(data.getValue(HConstants.CATALOG_FAMILY,
      HConstants.SPLITA_QUALIFIER));
    HRegionInfo splitB = Writables.getHRegionInfoOrNull(data.getValue(HConstants.CATALOG_FAMILY,
      HConstants.SPLITB_QUALIFIER));
    return new PairOfSameType<HRegionInfo>(splitA, splitB);
  }
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        new CollectingVisitor<Pair<HRegionInfo, ServerName>>() {
      private Pair<HRegionInfo, ServerName> current = null;

      @Override
      public boolean visit(Result r) throws IOException {
        HRegionInfo hri =
          parseHRegionInfoFromCatalogResult(r, HConstants.REGIONINFO_QUALIFIER);
        if (hri == null) {
          LOG.warn("No serialized HRegionInfo in " + r);
          return true;
        }
        if (!isInsideTable(hri, tableName)) return false;
        if (excludeOfflinedSplitParents && hri.isSplitParent()) return true;
        ServerName sn = getServerNameFromCatalogResult(r);
        // Populate this.current so available when we call #add
        this.current = new Pair<HRegionInfo, ServerName>(hri, sn);
        // Else call super and add this Result to the collection.
        return super.visit(r);
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    Visitor v = new Visitor() {
      @Override
      public boolean visit(Result r) throws IOException {
        if (r ==  null || r.isEmpty()) return true;
        LOG.info("fullScanMetaAndPrint.Current Meta Row: " + r);
        HRegionInfo hrim = MetaEditor.getHRegionInfo(r);
        LOG.info("fullScanMetaAndPrint.HRI Print= " + hrim);
        return true;
      }
    };
    fullScan(catalogTracker, v);
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    // clone region info (change embedded tableName with the new one)
    HRegionInfo[] clonedRegionsInfo = new HRegionInfo[regions.size()];
    for (int i = 0; i < clonedRegionsInfo.length; ++i) {
      // clone the region info from the snapshot region info
      HRegionInfo snapshotRegionInfo = regions.get(i);
      clonedRegionsInfo[i] = cloneRegionInfo(snapshotRegionInfo);

      // add the region name mapping between snapshot and cloned
      String snapshotRegionName = snapshotRegionInfo.getEncodedName();
      String clonedRegionName = clonedRegionsInfo[i].getEncodedName();
      regionsMap.put(Bytes.toBytes(snapshotRegionName), Bytes.toBytes(clonedRegionName));
      LOG.info("clone region=" + snapshotRegionName + " as " + clonedRegionName);

      // Add mapping between cloned region name and snapshot region info
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   *
   * @param snapshotRegionInfo Info for region to clone.
   * @return the new HRegion instance
   */
  public HRegionInfo cloneRegionInfo(final HRegionInfo snapshotRegionInfo) {
    return new HRegionInfo(tableDesc.getName(),
                      snapshotRegionInfo.getStartKey(), snapshotRegionInfo.getEndKey(),
                      snapshotRegionInfo.isSplit(), snapshotRegionInfo.getRegionId());
  }
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    FileStatus[] regionDirs = FSUtils.listStatus(fs, tableDir, new FSUtils.RegionDirFilter(fs));
    if (regionDirs == null) return null;

    List<HRegionInfo> regions = new LinkedList<HRegionInfo>();
    for (FileStatus regionDir: regionDirs) {
      HRegionInfo hri = HRegion.loadDotRegionInfoFileContent(fs, regionDir.getPath());
      regions.add(hri);
    }
    LOG.debug("found " + regions.size() + " regions for table=" + tableDesc.getNameAsString());
    return regions;
  }
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        Map<HRegionInfo, ServerName> regionLocations =
            table.getRegionLocations();
        List<TRegionInfo> results = new ArrayList<TRegionInfo>();
        for (Map.Entry<HRegionInfo, ServerName> entry :
            regionLocations.entrySet()) {
          HRegionInfo info = entry.getKey();
          ServerName serverName = entry.getValue();
          TRegionInfo region = new TRegionInfo();
          region.serverName = ByteBuffer.wrap(
              Bytes.toBytes(serverName.getHostname()));
          region.port = serverName.getPort();
          region.startKey = ByteBuffer.wrap(info.getStartKey());
          region.endKey = ByteBuffer.wrap(info.getEndKey());
          region.id = info.getRegionId();
          region.name = ByteBuffer.wrap(info.getRegionName());
          region.version = info.getVersion();
          results.add(region);
        }
        return results;
      } catch (TableNotFoundException e) {
        // Return empty list for non-existing table
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        if (value == null || value.length == 0) {
          throw new IOException("HRegionInfo REGIONINFO was null or " +
                                " empty in Meta for row="
                                + Bytes.toString(row));
        }
        HRegionInfo regionInfo = Writables.getHRegionInfo(value);
        TRegionInfo region = new TRegionInfo();
        region.setStartKey(regionInfo.getStartKey());
        region.setEndKey(regionInfo.getEndKey());
        region.id = regionInfo.getRegionId();
        region.setName(regionInfo.getRegionName());
        region.version = regionInfo.getVersion();

        // find region assignment to server
        value = startRowResult.getValue(HConstants.CATALOG_FAMILY,
                                        HConstants.SERVER_QUALIFIER);
        if (value != null && value.length > 0) {
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   * @throws IOException
   */
  public static void offlineParentInMeta(CatalogTracker catalogTracker,
      HRegionInfo parent, final HRegionInfo a, final HRegionInfo b)
  throws NotAllMetaRegionsOnlineException, IOException {
    HRegionInfo copyOfParent = new HRegionInfo(parent);
    copyOfParent.setOffline(true);
    copyOfParent.setSplit(true);
    Put put = new Put(copyOfParent.getRegionName());
    addRegionInfo(put, copyOfParent);
    put.add(HConstants.CATALOG_FAMILY, HConstants.SPLITA_QUALIFIER,
      Writables.getBytes(a));
    put.add(HConstants.CATALOG_FAMILY, HConstants.SPLITB_QUALIFIER,
      Writables.getBytes(b));
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Related Classes of org.apache.hadoop.hbase.HRegionInfo

  • org.apache.hadoop.hbase.catalog.MetaEditor
  • org.apache.hadoop.hbase.catalog.MetaReader
  • org.apache.hadoop.hbase.catalog.TestMetaMigrationConvertingToPB
  • org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation
  • org.apache.hadoop.hbase.client.HBaseAdmin
  • org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation
  • org.apache.hadoop.hbase.client.HConnectionManager$TableServers
  • org.apache.hadoop.hbase.client.HTable
  • org.apache.hadoop.hbase.client.MetaScanner
  • org.apache.hadoop.hbase.client.MetaScanner$BlockingMetaScannerVisitor
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