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.

    // This visitor collects offline split parents in the .META. table
    MetaReader.Visitor visitor = new MetaReader.Visitor() {
      @Override
      public boolean visit(Result r) throws IOException {
        if (r == null || r.isEmpty()) return true;
        HRegionInfo info =
          MetaReader.parseHRegionInfoFromCatalogResult(
            r, HConstants.REGIONINFO_QUALIFIER);
        if (info == null) return true; // Keep scanning
        if (info.isOffline() && info.isSplit()) {
          offlineSplitParents.put(info, r);
        }
        // Returning true means "keep scanning"
        return true;
      }

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  private HRegionInfo[] getHRegionInfos(HTableDescriptor hTableDescriptor,
    byte[][] splitKeys) {
    HRegionInfo[] hRegionInfos = null;
    if (splitKeys == null || splitKeys.length == 0) {
      hRegionInfos = new HRegionInfo[]{
          new HRegionInfo(hTableDescriptor.getName(), null, null)};
    } else {
      int numRegions = splitKeys.length + 1;
      hRegionInfos = new HRegionInfo[numRegions];
      byte[] startKey = null;
      byte[] endKey = null;
      for (int i = 0; i < numRegions; i++) {
        endKey = (i == splitKeys.length) ? null : splitKeys[i];
        hRegionInfos[i] =
            new HRegionInfo(hTableDescriptor.getName(), startKey, endKey);
        startKey = endKey;
      }
    }
    return hRegionInfos;
  }

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  throws IOException {
    checkInitialized();
    Pair<HRegionInfo, ServerName> pair =
      MetaReader.getRegion(this.catalogTracker, regionName);
    if (pair == null) throw new UnknownRegionException(Bytes.toString(regionName));
    HRegionInfo hri = pair.getFirst();
    if (cpHost != null) {
      if (cpHost.preUnassign(hri, force)) {
        return;
      }
    }

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  @Override
  public void offline(final byte[] regionName) throws IOException {
    Pair<HRegionInfo, ServerName> pair =
      MetaReader.getRegion(this.catalogTracker, regionName);
    if (pair == null) throw new UnknownRegionException(Bytes.toStringBinary(regionName));
    HRegionInfo hri = pair.getFirst();
    this.assignmentManager.regionOffline(hri);
  }

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      }
      setAllRegionServersOffline(allRSsOffline);
    }


    private void actOnTimeOut(RegionState regionState) {
      HRegionInfo regionInfo = regionState.getRegion();
      LOG.info("Regions in transition timed out:  " + regionState);
      // Expired! Do a retry.
      switch (regionState.getState()) {
      case CLOSED:
        LOG.info("Region " + regionInfo.getEncodedName()
            + " has been CLOSED for too long, waiting on queued "
            + "ClosedRegionHandler to run or server shutdown");
        // Update our timestamp.
        regionState.updateTimestampToNow();
        break;
      case OFFLINE:
        LOG.info("Region has been OFFLINE for too long, " + "reassigning "
            + regionInfo.getRegionNameAsString() + " to a random server");
        invokeAssign(regionInfo);
        break;
      case PENDING_OPEN:
        LOG.info("Region has been PENDING_OPEN for too "
            + "long, reassigning region=" + regionInfo.getRegionNameAsString());
        invokeAssign(regionInfo);
        break;
      case OPENING:
        processOpeningState(regionInfo);
        break;
      case OPEN:
        LOG.error("Region has been OPEN for too long, " +
            "we don't know where region was opened so can't do anything");
        synchronized (regionState) {
          regionState.updateTimestampToNow();
        }
        break;


      case PENDING_CLOSE:
        LOG.info("Region has been PENDING_CLOSE for too "
            + "long, running forced unassign again on region="
            + regionInfo.getRegionNameAsString());
        invokeUnassign(regionInfo);
        break;
      case CLOSING:
        LOG.info("Region has been CLOSING for too " +
          "long, this should eventually complete or the server will " +

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        + ", server=" + serverName;
    }


    @Override
    public void readFields(DataInput in) throws IOException {
      region = new HRegionInfo();
      region.readFields(in);
      state = State.valueOf(in.readUTF());
      stamp.set(in.readLong());
    }

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    }
    try {
      // 4. wait for all regions to finish creation
      for (int i = 0; i < regionNumber; i++) {
        Future<HRegionInfo> future = completionService.take();
        HRegionInfo regionInfo = future.get();
        regionInfos.add(regionInfo);
      }
    } catch (InterruptedException e) {
      LOG.error("Caught " + e + " during region creation");
      throw new InterruptedIOException(e.getMessage());

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  protected Store(Path basedir, HRegion region, HColumnDescriptor family,
    FileSystem fs, Configuration conf)
  throws IOException {
    super(conf, region.getRegionInfo().getTableNameAsString(),
        Bytes.toString(family.getName()));
    HRegionInfo info = region.getRegionInfo();
    this.fs = fs;
    Path p = getStoreHomedir(basedir, info.getEncodedName(), family.getName());
    this.homedir = createStoreHomeDir(this.fs, p);
    this.region = region;
    this.family = family;
    this.conf = conf;
    this.blocksize = family.getBlocksize();


    this.dataBlockEncoder =
        new HFileDataBlockEncoderImpl(family.getDataBlockEncodingOnDisk(),
            family.getDataBlockEncoding());


    this.comparator = info.getComparator();
    // getTimeToLive returns ttl in seconds.  Convert to milliseconds.
    this.ttl = family.getTimeToLive();
    if (ttl == HConstants.FOREVER) {
      // default is unlimited ttl.
      ttl = Long.MAX_VALUE;

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          " last=" + Bytes.toStringBinary(lastKey));
      LOG.debug("Region bounds: first=" +
          Bytes.toStringBinary(region.getStartKey()) +
          " last=" + Bytes.toStringBinary(region.getEndKey()));


      HRegionInfo hri = region.getRegionInfo();
      if (!hri.containsRange(firstKey, lastKey)) {
        throw new WrongRegionException(
            "Bulk load file " + srcPath.toString() + " does not fit inside region "
            + this.region);
      }

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      @Override
      public boolean visit(Result r) throws IOException {
        if (r ==  null || r.isEmpty()) return true;
        Pair<HRegionInfo, ServerName> region = parseCatalogResult(r);
        if (region == null) return true;
        HRegionInfo hri = region.getFirst();
        if (hri  == null) return true;
        if (hri.getTableNameAsString() == null) return true;
        if (disabledTables.contains(
            hri.getTableNameAsString())) return true;
        // Are we to include split parents in the list?
        if (excludeOfflinedSplitParents && hri.isSplitParent()) return true;
        regions.put(hri, region.getSecond());
        return true;
      }
    };
    fullScan(catalogTracker, v);

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