Examples of org.apache.hadoop.hbase.HRegionInfo

org.apache.hadoop.hbase.HRegionInfo
HRegion information. Contains HRegion id, start and end keys, a reference to this HRegions' table descriptor, etc.

   */
  public boolean prepare() {
    if (!this.parent.isSplittable()) return false;
    // Split key can be null if this region is unsplittable; i.e. has refs.
    if (this.splitrow == null) return false;
    HRegionInfo hri = this.parent.getRegionInfo();
    parent.prepareToSplit();
    // Check splitrow.
    byte [] startKey = hri.getStartKey();
    byte [] endKey = hri.getEndKey();
    if (Bytes.equals(startKey, splitrow) ||
        !this.parent.getRegionInfo().containsRow(splitrow)) {
      LOG.info("Split row is not inside region key range or is equal to " +
          "startkey: " + Bytes.toStringBinary(this.splitrow));
      return false;
    }
    long rid = getDaughterRegionIdTimestamp(hri);
    this.hri_a = new HRegionInfo(hri.getTableName(), startKey, this.splitrow,
      false, rid);
    this.hri_b = new HRegionInfo(hri.getTableName(), this.splitrow, endKey,
      false, rid);
    return true;
  }

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   * @throws IOException
   * @throws KeeperException
   */
  void openDaughterRegion(final Server server, final HRegion daughter)
  throws IOException, KeeperException {
    HRegionInfo hri = daughter.getRegionInfo();
    LoggingProgressable reporter = server == null? null:
      new LoggingProgressable(hri, server.getConfiguration());
    daughter.openHRegion(reporter);
  }

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          @Override
          public boolean processRow(Result rowResult) throws IOException {
            if (rowResult == null || rowResult.size() <= 0) {
              return true;
            }
            HRegionInfo info = MetaReader.parseHRegionInfoFromCatalogResult(
              rowResult, HConstants.REGIONINFO_QUALIFIER);
            if (info == null) {
              LOG.warn("No serialized HRegionInfo in " + rowResult);
              return true;
            }
            if (!(Bytes.equals(info.getTableName(), desc.getName()))) {
              return false;
            }
            String hostAndPort = null;
            byte [] value = rowResult.getValue(HConstants.CATALOG_FAMILY,
              HConstants.SERVER_QUALIFIER);
            // Make sure that regions are assigned to server
            if (value != null && value.length > 0) {
              hostAndPort = Bytes.toString(value);
            }
            if (!(info.isOffline() || info.isSplit()) && hostAndPort != null) {
              actualRegCount.incrementAndGet();
            }
            return true;
          }
        };

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          MetaReader.getTableRegionsAndLocations(ct,
              tableName);
        for (Pair<HRegionInfo, ServerName> pair: pairs) {
          // May not be a server for a particular row
          if (pair.getSecond() == null) continue;
          HRegionInfo r = pair.getFirst();
          // check for parents
          if (r.isSplitParent()) continue;
          // if a split point given, only split that particular region
          if (splitPoint != null && !r.containsRow(splitPoint)) continue;
          // call out to region server to do split now
          split(pair.getSecond(), pair.getFirst(), splitPoint);
        }
      }
    } finally {

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        @Override
        public boolean processRow(Result data) throws IOException {
          if (data == null || data.size() <= 0) {
            return true;
          }
          HRegionInfo info = MetaReader.parseHRegionInfoFromCatalogResult(
            data, HConstants.REGIONINFO_QUALIFIER);
          if (info == null) {
            LOG.warn("No serialized HRegionInfo in " + data);
            return true;
          }
          if (!encodedName.equals(info.getEncodedName())) return true;
          ServerName sn = MetaReader.getServerNameFromCatalogResult(data);
          result.set(new Pair<HRegionInfo, ServerName>(info, sn));
          return false; // found the region, stop
        }
      };

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            "First region should start with an empty key.  Creating a new " +
            "region and regioninfo in HDFS to plug the hole.",
            getTableInfo(), next);
        HTableDescriptor htd = getTableInfo().getHTD();
        // 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: "

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        errors.reportError(ERROR_CODE.LAST_REGION_ENDKEY_NOT_EMPTY,
            "Last region should end with an empty key. Creating a new "
                + "region and regioninfo in HDFS to plug the hole.", getTableInfo());
        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);

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                + Bytes.toStringBinary(holeStartKey) + " and "
                + 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());

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   * @return whether znode is successfully transitioned to OPENED state.
   * @throws IOException
   */
  private boolean transitionToOpened(final HRegion r) throws IOException {
    boolean result = false;
    HRegionInfo hri = r.getRegionInfo();
    final String name = hri.getRegionNameAsString();
    // Finally, Transition ZK node to OPENED
    try {
      if (ZKAssign.transitionNodeOpened(this.server.getZooKeeper(), hri,
          this.server.getServerName(), this.version) == -1) {
        LOG.warn("Completed the OPEN of region " + name +

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