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  1. Hadoop HDFS
  2. HDFS-1056

Multi-node RPC deadlocks during block recovery

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 0.20.2, 0.21.0, 0.22.0
    • Fix Version/s: 0.20-append
    • Component/s: datanode
    • Labels:
      None

      Description

      Believe it or not, I'm seeing HADOOP-3657 / HADOOP-3673 in a 5-node 0.20 cluster. I have many concurrent writes on the cluster, and when I kill a DN, some percentage of the time I get one of these cross-node deadlocks among 3 of the nodes (replication 3). All of the DN RPC server threads are tied up waiting on RPC clients to other datanodes.

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            • Assignee:
              Unassigned
              Reporter:
              tlipcon Todd Lipcon
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              • Created:
                Updated:
                Resolved: