Package org.apache.hadoop.hbase.regionserver

Examples of org.apache.hadoop.hbase.regionserver.HRegion$HScanner

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        // from special EMPTY_START_ROW to next region's startKey
        HRegionInfo newRegion = new HRegionInfo(htd.getName(),
            HConstants.EMPTY_START_ROW, next.getStartKey());

        // TODO test
        HRegion region = HBaseFsckRepair.createHDFSRegionDir(conf, newRegion, htd);
        LOG.info("Table region start key was not empty.  Created new empty region: "
            + newRegion + " " +region);
        fixes++;
      }
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        HTableDescriptor htd = getTableInfo().getHTD();
        // from curEndKey to EMPTY_START_ROW
        HRegionInfo newRegion = new HRegionInfo(htd.getName(), curEndKey,
            HConstants.EMPTY_START_ROW);

        HRegion region = HBaseFsckRepair.createHDFSRegionDir(conf, newRegion, htd);
        LOG.info("Table region end key was not empty. Created new empty region: " + newRegion
            + " " + region);
        fixes++;
      }
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                + Bytes.toStringBinary(holeStopKey)
                + ".  Creating a new regioninfo and region "
                + "dir in hdfs to plug the hole.");
        HTableDescriptor htd = getTableInfo().getHTD();
        HRegionInfo newRegion = new HRegionInfo(htd.getName(), holeStartKey, holeStopKey);
        HRegion region = HBaseFsckRepair.createHDFSRegionDir(conf, newRegion, htd);
        LOG.info("Plugged hold by creating new empty region: "+ newRegion + " " +region);
        fixes++;
      }
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        // create new empty container region.
        HTableDescriptor htd = getTableInfo().getHTD();
        // from start key to end Key
        HRegionInfo newRegion = new HRegionInfo(htd.getName(), range.getFirst(),
            range.getSecond());
        HRegion region = HBaseFsckRepair.createHDFSRegionDir(conf, newRegion, htd);
        LOG.info("Created new empty container region: " +
            newRegion + " to contain regions: " + Joiner.on(",").join(overlap));
        debugLsr(region.getRegionDir());

        // all target regions are closed, should be able to safely cleanup.
        boolean didFix= false;
        Path target = region.getRegionDir();
        for (HbckInfo contained : overlap) {
          LOG.info("Merging " + contained  + " into " + target );
          int merges = mergeRegionDirs(target, contained);
          if (merges > 0) {
            didFix = true;
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        return;
      }
      final String encodedName = regionInfo.getEncodedName();

      // Check that this region is not already online
      HRegion region = this.rsServices.getFromOnlineRegions(encodedName);

      // Open region.  After a successful open, failures in subsequent
      // processing needs to do a close as part of cleanup.
      region = openRegion();
      if (region == null) {
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  /**
   * @return Instance of HRegion if successful open else null.
   */
  HRegion openRegion() {
    HRegion region = null;
    try {
      // Instantiate the region.  This also periodically tickles our zk OPENING
      // state so master doesn't timeout this region in transition.
      region = HRegion.openHRegion(this.regionInfo, this.htd,
          this.rsServices.getWAL(), this.server.getConfiguration(),
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        Bytes.toString(orphanRegionRange.getSecond()) + ")");

    // create new region on hdfs.  move data into place.
    HRegionInfo hri = new HRegionInfo(template.getName(), orphanRegionRange.getFirst(), orphanRegionRange.getSecond());
    LOG.info("Creating new region : " + hri);
    HRegion region = HBaseFsckRepair.createHDFSRegionDir(getConf(), hri, template);
    Path target = region.getRegionDir();

    // rename all the data to new region
    mergeRegionDirs(target, hi);
    fixes++;
  }
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    Configuration c = getConf();
    HRegionInfo rootHRI = new HRegionInfo(HRegionInfo.ROOT_REGIONINFO);
    MasterFileSystem.setInfoFamilyCachingForRoot(false);
    HRegionInfo metaHRI = new HRegionInfo(HRegionInfo.FIRST_META_REGIONINFO);
    MasterFileSystem.setInfoFamilyCachingForMeta(false);
    HRegion root = HRegion.createHRegion(rootHRI, rootdir, c,
        HTableDescriptor.ROOT_TABLEDESC);
    HRegion meta = HRegion.createHRegion(metaHRI, rootdir, c,
        HTableDescriptor.META_TABLEDESC);
    MasterFileSystem.setInfoFamilyCachingForRoot(true);
    MasterFileSystem.setInfoFamilyCachingForMeta(true);

    // Add first region from the META table to the ROOT region.
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    // we can rebuild, move old root and meta out of the way and start
    LOG.info("HDFS regioninfo's seems good.  Sidelining old .META.");
    Path backupDir = sidelineOldRootAndMeta();

    LOG.info("Creating new .META.");
    HRegion meta = createNewRootAndMeta();

    // populate meta
    List<Put> puts = generatePuts(tablesInfo);
    if (puts == null) {
      LOG.fatal("Problem encountered when creating new .META. entries.  " +
        "You may need to restore the previously sidelined -ROOT- and .META.");
      return false;
    }
    meta.put(puts.toArray(new Put[0]));
    meta.close();
    meta.getLog().closeAndDelete();
    LOG.info("Success! .META. table rebuilt.");
    LOG.info("Old -ROOT- and .META. are moved into " + backupDir);
    return true;
  }
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    List<HRegionInfo> regionInfos = new ArrayList<HRegionInfo>();
    for (final HRegionInfo newRegion : newRegions) {
      completionService.submit(new Callable<HRegionInfo>() {
        public HRegionInfo call() throws IOException {
          // 1. Create HRegion
          HRegion region = HRegion.createHRegion(newRegion,
              rootDir, conf, hTableDescriptor, null,
              false, true);
          try {
            // 2. Custom user code to interact with the created region
            if (task != null) {
              task.fillRegion(region);
            }
          } finally {
            // 3. Close the new region to flush to disk. Close log file too.
            region.close();
          }
          return region.getRegionInfo();
        }
      });
    }
    try {
      // 4. wait for all regions to finish creation
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