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  1. Hadoop HDFS
  2. HDFS-793

DataNode should first receive the whole packet ack message before it constructs and sends its own ack message for the packet

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.20.2, 0.21.0
    • Component/s: datanode
    • Labels:
      None
    • Hadoop Flags:
      Incompatible change, Reviewed

      Description

      Currently BlockReceiver#PacketResponder interleaves receiving ack message and sending ack message for the same packet. It reads a portion of the message, sends a portion of its ack, and continues like this until it hits the end of the message. The problem is that if it gets an error receiving the ack, it is not able to send an ack that reflects the source of the error.

      The PacketResponder should receives the whole packet ack message first and then constuct and sends out its ack.

        Attachments

        1. separateSendRcvAck-0.20-yahoo.patch
          14 kB
          Hairong Kuang
        2. separateSendRcvAck2.patch
          18 kB
          Hairong Kuang
        3. separateSendRcvAck-0.20.patch
          14 kB
          Hairong Kuang
        4. separateSendRcvAck1.patch
          18 kB
          Hairong Kuang
        5. separateSendRcvAck.patch
          16 kB
          Hairong Kuang

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              • Assignee:
                hairong Hairong Kuang
                Reporter:
                hairong Hairong Kuang
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                Dates

                • Created:
                  Updated:
                  Resolved: