Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-3555

idle client socket triggers DN ERROR log (should be INFO or DEBUG)

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.20.2
    • Fix Version/s: 2.0.2-alpha
    • Component/s: datanode, hdfs-client
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Datanode service is logging java.net.SocketTimeoutException at ERROR level.
      This message indicates that the datanode is not able to send data to the client because the client has stopped reading. This message is not really a cause for alarm and should be INFO level.

      2012-06-18 17:47:13 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode DatanodeRegistration(x.x.x.x:50010, storageID=DS-196671195-10.10.120.67-50010-1334328338972, infoPort=50075, ipcPort=50020):DataXceiver
      java.net.SocketTimeoutException: 480000 millis timeout while waiting for channel to be ready for write. ch : java.nio.channels.SocketChannel[connected local=/10.10.120.67:50010 remote=/10.10.120.67:59282]
      at org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246)
      at org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:159)
      at org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:198)
      at org.apache.hadoop.hdfs.server.datanode.BlockSender.sendChunks(BlockSender.java:397)
      at org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:493)
      at org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:267)
      at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:163)

      1. hdfs-3555.patch
        3 kB
        Andy Isaacson
      2. hdfs-3555-2.txt
        2 kB
        Andy Isaacson
      3. hdfs-3555-3.txt
        3 kB
        Andy Isaacson

        Activity

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          People

          • Assignee:
            Andy Isaacson
            Reporter:
            Jeff Lord
          • Votes:
            1 Vote for this issue
            Watchers:
            9 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development