List of heartbeatCheck() Examples

Examples of heartbeatCheck()

org.apache.hadoop.hdfs.server.blockmanagement.HeartbeatManager.heartbeatCheck()
Check if there are any expired heartbeats, and if so, whether any blocks have to be re-replicated. While removing dead datanodes, make sure that only one datanode is marked dead at a time within the synchronized section. Otherwise, a cascading effect causes more datanodes to be declared dead.

Examples of org.apache.hadoop.hdfs.server.blockmanagement.HeartbeatManager.heartbeatCheck()

      // make sure that NN detects that the datanode is down
      try {
        namesystem.writeLock();
        synchronized (hm) {
          datanode.setLastUpdate(0); // mark it dead
          hm.heartbeatCheck();
        }
      } finally {
        namesystem.writeUnlock();
      }

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Examples of org.apache.hadoop.hdfs.server.blockmanagement.HeartbeatManager.heartbeatCheck()

      
      try {
        namesystem.writeLock();
        synchronized(hm) {
          nonExcessDN.setLastUpdate(0); // mark it dead
          hm.heartbeatCheck();
        }
      } finally {
        namesystem.writeUnlock();
      }

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