Examples of NumberReplicas

Examples of org.apache.hadoop.dfs.FSNamesystem.NumberReplicas

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      // restart the first datanode
      cluster.restartDataNode(dnprop);
      cluster.waitActive();
     
      // check if excessive replica is detected
      NumberReplicas num = null;
      do {
       synchronized (namesystem) {
         num = namesystem.countNodes(block);
       }
      } while (num.excessReplicas() == 0);
     
      // find out a non-excess node
      Iterator<DatanodeDescriptor> iter = namesystem.blocksMap.nodeIterator(block);
      DatanodeDescriptor nonExcessDN = null;
      while (iter.hasNext()) {
        DatanodeDescriptor dn = iter.next();
        Collection<Block> blocks = namesystem.excessReplicateMap.get(dn.getStorageID());
        if (blocks == null || !blocks.contains(block) ) {
          nonExcessDN = dn;
          break;
        }
      }
      assertTrue(nonExcessDN!=null);
     
      // bring down non excessive datanode
      dnprop = cluster.stopDataNode(nonExcessDN.getName());
      // make sure that NN detects that the datanode is down
      synchronized (namesystem.heartbeats) {
        nonExcessDN.setLastUpdate(0); // mark it dead
        namesystem.heartbeatCheck();
      }
     
      // The block should be replicated
      do {
        num = namesystem.countNodes(block);
      } while (num.liveReplicas() != REPLICATION_FACTOR);
     
      // restart the first datanode
      cluster.restartDataNode(dnprop);
      cluster.waitActive();
     
      // check if excessive replica is detected
      do {
       num = namesystem.countNodes(block);
      } while (num.excessReplicas() == 2);
    } finally {
      cluster.shutdown();
    }
  }
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Examples of org.apache.hadoop.hdfs.server.blockmanagement.NumberReplicas

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    for (LocatedBlock lBlk : blocks.getLocatedBlocks()) {
      ExtendedBlock block = lBlk.getBlock();
      boolean isCorrupt = lBlk.isCorrupt();
      String blkName = block.toString();
      DatanodeInfo[] locs = lBlk.getLocations();
      NumberReplicas numberReplicas = namenode.getNamesystem().getBlockManager().countNodes(block.getLocalBlock());
      int liveReplicas = numberReplicas.liveReplicas();
      res.totalReplicas += liveReplicas;
      short targetFileReplication = file.getReplication();
      res.numExpectedReplicas += targetFileReplication;
      if (liveReplicas > targetFileReplication) {
        res.excessiveReplicas += (liveReplicas - targetFileReplication);
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Examples of org.apache.hadoop.hdfs.server.blockmanagement.NumberReplicas

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    for (LocatedBlock lBlk : blocks.getLocatedBlocks()) {
      ExtendedBlock block = lBlk.getBlock();
      boolean isCorrupt = lBlk.isCorrupt();
      String blkName = block.toString();
      DatanodeInfo[] locs = lBlk.getLocations();
      NumberReplicas numberReplicas = namenode.getNamesystem().getBlockManager().countNodes(block.getLocalBlock());
      int liveReplicas = numberReplicas.liveReplicas();
      res.totalReplicas += liveReplicas;
      short targetFileReplication = file.getReplication();
      res.numExpectedReplicas += targetFileReplication;
      if (liveReplicas > targetFileReplication) {
        res.excessiveReplicas += (liveReplicas - targetFileReplication);
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Examples of org.apache.hadoop.hdfs.server.blockmanagement.NumberReplicas

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      assertThat(storage.getState(), is(state));
    }
  }
 
  private void validateNumberReplicas(int expectedReplicas) throws IOException {
    NumberReplicas numberReplicas = blockManager.countNodes(block);
    assertThat(numberReplicas.liveReplicas(), is(expectedReplicas));
    assertThat(numberReplicas.excessReplicas(), is(0));
    assertThat(numberReplicas.corruptReplicas(), is(0));
    assertThat(numberReplicas.decommissionedReplicas(), is(0));
    assertThat(numberReplicas.replicasOnStaleNodes(), is(0));
   
    BlockManagerTestUtil.updateState(blockManager);
    assertThat(blockManager.getUnderReplicatedBlocksCount(), is(0L));
    assertThat(blockManager.getExcessBlocksCount(), is(0L));
  }
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Examples of org.apache.hadoop.hdfs.server.blockmanagement.NumberReplicas

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    // Force NameNode to detect that the datanode is down
    BlockManagerTestUtil.noticeDeadDatanode(
        cluster.getNameNode(), normalDataNode.getXferAddr());
   
    // The live replica count should now be zero (since the NORMAL replica is offline)
    NumberReplicas numberReplicas = blockManager.countNodes(block);
    assertThat(numberReplicas.liveReplicas(), is(0));
   
    // The block should be reported as under-replicated
    BlockManagerTestUtil.updateState(blockManager);
    assertThat(blockManager.getUnderReplicatedBlocksCount(), is(1L));
   
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Examples of org.apache.hadoop.hdfs.server.blockmanagement.NumberReplicas

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    // There should now be only 1 *location* for the block as the READ_ONLY_SHARED is corrupt
    waitForLocations(1);
   
    // However, the corrupt READ_ONLY_SHARED replica should *not* affect the overall corrupt replicas count
    NumberReplicas numberReplicas = blockManager.countNodes(block);
    assertThat(numberReplicas.corruptReplicas(), is(0));
  }
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Examples of org.apache.hadoop.hdfs.server.namenode.FSNamesystem.NumberReplicas

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      nn.reportBadBlocks(new LocatedBlock[] {badLBlock});
     
      nn.getNamesystem().restartReplicationWork();
     
      DFSTestUtil.waitReplication(fs, path, (short)3);
      NumberReplicas num = nn.getNamesystem().countNodes(
          firstBlock.getBlock());
      assertEquals(0, num.corruptReplicas());

    } finally {
      cluster.shutdown();
    }
  }
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Examples of org.apache.hadoop.hdfs.server.namenode.FSNamesystem.NumberReplicas

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        namesystem.heartbeatCheck();
      }

      LOG.info("Waiting for live replicas to hit repl factor");
      // The block should be replicated
      NumberReplicas num;
      do {
        num = namesystem.countNodes(block);
      } while (num.liveReplicas() != REPLICATION_FACTOR);

      LOG.info("Restarting first DN");
      // restart the first datanode
      cluster.restartDataNode(dnprop);
      cluster.waitActive(false);
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Examples of org.apache.hadoop.hdfs.server.namenode.FSNamesystem.NumberReplicas

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  private void waitForExcessReplicasToChangeTo(
    FSNamesystem namesystem,
    Block block,
    int waitForReplicas) throws Exception
  {
    NumberReplicas num;
    long startChecking = System.currentTimeMillis();
    do {
      synchronized (namesystem) {
        num = namesystem.countNodes(block);
      }
      LOG.info("Waiting for excess replicas == " + waitForReplicas +
       " - current: " + num);
      Thread.sleep(200);
      if (System.currentTimeMillis() - startChecking > 30000) {
        namesystem.metaSave("TestNodeCount.meta");
        LOG.warn("Dumping meta into log directory");
        fail("Timed out waiting for excess replicas to change");
      }

    } while (num.excessReplicas() != waitForReplicas);
  }
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Examples of org.apache.hadoop.hdfs.server.namenode.FSNamesystem.NumberReplicas

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      // restart the first datanode
      cluster.restartDataNode(dnprop);
      cluster.waitActive();
     
      // check if excessive replica is detected
      NumberReplicas num = null;
      do {
       num = namesystem.countNodes(block);
      } while (num.excessReplicas() == 0);
     
      // find out a non-excess node
      Iterator<DatanodeDescriptor> iter = namesystem.blocksMap.nodeIterator(block);
      DatanodeDescriptor nonExcessDN = null;
      while (iter.hasNext()) {
        DatanodeDescriptor dn = iter.next();
        Collection<Block> blocks = namesystem.excessReplicateMap.get(dn.getStorageID());
        if (blocks == null || !blocks.contains(block) ) {
          nonExcessDN = dn;
          break;
        }
      }
      assertTrue(nonExcessDN!=null);
     
      // bring down non excessive datanode
      dnprop = cluster.stopDataNode(nonExcessDN.getName());
      // make sure that NN detects that the datanode is down
      synchronized (namesystem.heartbeats) {
        nonExcessDN.setLastUpdate(0); // mark it dead
        namesystem.heartbeatCheck();
      }
     
      // The block should be replicated
      do {
        num = namesystem.countNodes(block);
      } while (num.liveReplicas() != REPLICATION_FACTOR);
     
      // restart the first datanode
      cluster.restartDataNode(dnprop);
      cluster.waitActive();
     
      // check if excessive replica is detected
      do {
       num = namesystem.countNodes(block);
      } while (num.excessReplicas() == 2);
    } finally {
      cluster.shutdown();
    }
  }
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