private static void bootstrap(final Path rd, final Configuration c)
 throws IOException {
   LOG.info("BOOTSTRAP: creating ROOT and first META regions");
   try {
     // Bootstrapping, make sure blockcache is off.  Else, one will be
     // created here in bootstap and it'll need to be cleaned up.  Better to
     // not make it in first place.  Turn off block caching for bootstrap.
     // Enable after.
     HRegionInfo rootHRI = new HRegionInfo(HRegionInfo.ROOT_REGIONINFO);
     setInfoFamilyCachingForRoot(false);
     HRegionInfo metaHRI = new HRegionInfo(HRegionInfo.FIRST_META_REGIONINFO);
     setInfoFamilyCachingForMeta(false);
     HRegion root = HRegion.createHRegion(rootHRI, rd, c,
         HTableDescriptor.ROOT_TABLEDESC);
     HRegion meta = HRegion.createHRegion(metaHRI, rd, c,
         HTableDescriptor.META_TABLEDESC);
     setInfoFamilyCachingForRoot(true);
     setInfoFamilyCachingForMeta(true);
     // Add first region from the META table to the ROOT region.
     HRegion.addRegionToMETA(root, meta);
     root.close();
     root.getLog().closeAndDelete();
     meta.close();
     meta.getLog().closeAndDelete();
   } catch (IOException e) {
     e = RemoteExceptionHandler.checkIOException(e);
     LOG.error("bootstrap", e);
     throw e;
   }
 }
 /**
  * Test that if we fail a flush, abort gets set on close.
  *
  * @see <a href="https://issues.apache.org/jira/browse/HBASE-4270">HBASE-4270</a>
  * @throws IOException
  * @throws NodeExistsException
  * @throws KeeperException
  */
 @Test
 public void testFailedFlushAborts() throws IOException, NodeExistsException, KeeperException {
   final Server server = new MockServer(HTU, false);
   final RegionServerServices rss = HTU.createMockRegionServerService();
   HTableDescriptor htd = TEST_HTD;
   final HRegionInfo hri =
       new HRegionInfo(htd.getTableName(), HConstants.EMPTY_END_ROW, HConstants.EMPTY_END_ROW);
   HRegion region = HTU.createLocalHRegion(hri, htd);
   try {
     assertNotNull(region);
     // Spy on the region so can throw exception when close is called.
     HRegion spy = Mockito.spy(region);
     final boolean abort = false;
     Mockito.when(spy.close(abort)).thenThrow(new RuntimeException("Mocked failed close!"));
     // The CloseRegionHandler will try to get an HRegion that corresponds
     // to the passed hri -- so insert the region into the online region Set.
     rss.addToOnlineRegions(spy);
     // Assert the Server is NOT stopped before we call close region.
     assertFalse(server.isStopped());
     CloseRegionHandler handler = new CloseRegionHandler(server, rss, hri, false, false, -1);
     boolean throwable = false;
     try {
       handler.process();
     } catch (Throwable t) {
       throwable = true;
     } finally {
       assertTrue(throwable);
       // Abort calls stop so stopped flag should be set.
       assertTrue(server.isStopped());
     }
   } finally {
     HRegion.closeHRegion(region);
   }
 }
Ejemplo n.º 3
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 private void closeRegion(final HRegion region) throws IOException {
   if (region != null) {
     region.close();
     HLog wal = region.getLog();
     if (wal != null) wal.close();
   }
 }
Ejemplo n.º 4
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    protected boolean merge(final HRegionInfo[] info) throws IOException {
      if (info.length < 2) {
        LOG.info("only one region - nothing to merge");
        return false;
      }

      HRegion currentRegion = null;
      long currentSize = 0;
      HRegion nextRegion = null;
      long nextSize = 0;
      for (int i = 0; i < info.length - 1; i++) {
        if (currentRegion == null) {
          currentRegion = HRegion.newHRegion(tabledir, hlog, fs, conf, info[i], this.htd, null);
          currentRegion.initialize();
          currentSize = currentRegion.getLargestHStoreSize();
        }
        nextRegion = HRegion.newHRegion(tabledir, hlog, fs, conf, info[i + 1], this.htd, null);
        nextRegion.initialize();
        nextSize = nextRegion.getLargestHStoreSize();

        if ((currentSize + nextSize) <= (maxFilesize / 2)) {
          // We merge two adjacent regions if their total size is less than
          // one half of the desired maximum size
          LOG.info(
              "Merging regions "
                  + currentRegion.getRegionNameAsString()
                  + " and "
                  + nextRegion.getRegionNameAsString());
          HRegion mergedRegion = HRegion.mergeAdjacent(currentRegion, nextRegion);
          updateMeta(currentRegion.getRegionName(), nextRegion.getRegionName(), mergedRegion);
          break;
        }
        LOG.info(
            "not merging regions "
                + Bytes.toStringBinary(currentRegion.getRegionName())
                + " and "
                + Bytes.toStringBinary(nextRegion.getRegionName()));
        currentRegion.close();
        currentRegion = nextRegion;
        currentSize = nextSize;
      }
      if (currentRegion != null) {
        currentRegion.close();
      }
      return true;
    }
Ejemplo n.º 5
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 private void closeRegion(final HRegion region) throws IOException {
   if (region != null) {
     region.close();
     WAL wal = region.getWAL();
     if (wal != null) {
       wal.shutdown();
     }
   }
 }
Ejemplo n.º 6
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  /** Creates, flushes, and closes a new region. */
  public static HRegion createHDFSRegionDir(
      Configuration conf, HRegionInfo hri, HTableDescriptor htd) throws IOException {
    // Create HRegion
    Path root = FSUtils.getRootDir(conf);
    HRegion region = HRegion.createHRegion(hri, root, conf, htd, null);

    // Close the new region to flush to disk. Close log file too.
    region.close();
    return region;
  }
Ejemplo n.º 7
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    OfflineMerger(Configuration conf, FileSystem fs) throws IOException {
      super(conf, fs, HConstants.META_TABLE_NAME);

      Path rootTableDir =
          HTableDescriptor.getTableDir(
              fs.makeQualified(new Path(conf.get(HConstants.HBASE_DIR))),
              HConstants.ROOT_TABLE_NAME);

      // Scan root region to find all the meta regions

      root =
          HRegion.newHRegion(
              rootTableDir,
              hlog,
              fs,
              conf,
              HRegionInfo.ROOT_REGIONINFO,
              HTableDescriptor.ROOT_TABLEDESC,
              null);
      root.initialize();

      Scan scan = new Scan();
      scan.addColumn(HConstants.CATALOG_FAMILY, HConstants.REGIONINFO_QUALIFIER);
      InternalScanner rootScanner = root.getScanner(scan);

      try {
        List<KeyValue> results = new ArrayList<KeyValue>();
        boolean hasMore;
        do {
          hasMore = rootScanner.next(results);
          for (KeyValue kv : results) {
            HRegionInfo info = Writables.getHRegionInfoOrNull(kv.getValue());
            if (info != null) {
              metaRegions.add(info);
            }
          }
        } while (hasMore);
      } finally {
        rootScanner.close();
        try {
          root.close();

        } catch (IOException e) {
          LOG.error(e);
        }
      }
    }
Ejemplo n.º 8
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 @After
 public void tearDown() throws Exception {
   HLog hlog = region.getLog();
   region.close();
   hlog.closeAndDelete();
 }
Ejemplo n.º 9
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 void cleanupFailedOpen(final HRegion region) throws IOException {
   if (region != null) region.close();
 }