Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.23.2
    • Fix Version/s: 0.23.3, 2.0.2-alpha
    • Component/s: mrv2
    • Labels:
      None

      Description

      We saw an instance where the RM stopped launch Application masters. We found that the launcher thread was hung because something weird/bad happened to the NM node. Currently there is only 1 launcher thread (jira 4061 to fix that). We need this to not happen. Even once we increase the number of threads to > 1 if that many nodes go bad the RM would be stuck. Note that this was stuck like this for approximately 9 hours.

      Stack trace on hung AM launcher:

      "pool-1-thread-1" prio=10 tid=0x000000004343e800 nid=0x3a4c in Object.wait()
      [0x000000004fad2000]
      java.lang.Thread.State: WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      at java.lang.Object.wait(Object.java:485)
      at org.apache.hadoop.ipc.Client.call(Client.java:1076)

      • locked <0x00002aab05a4f3f0> (a org.apache.hadoop.ipc.Client$Call)
        at
        org.apache.hadoop.yarn.ipc.ProtoOverHadoopRpcEngine$Invoker.invoke(ProtoOverHadoopRpcEngine.java:135)
        at $Proxy76.startContainer(Unknown Source)
        at
        org.apache.hadoop.yarn.api.impl.pb.client.ContainerManagerPBClientImpl.startContainer(ContainerManagerPBClientImpl.java:87)
        at
        org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher.launch(AMLauncher.java:118)
        at
        org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher.run(AMLauncher.java:265)
        at
        java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at
        java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)
      1. MAPREDUCE-4062-branch-0.23.patch
        30 kB
        Thomas Graves
      2. MAPREDUCE-4062.patch
        25 kB
        Thomas Graves
      3. MAPREDUCE-4062.patch
        30 kB
        Thomas Graves

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            • Assignee:
              Thomas Graves
              Reporter:
              Thomas Graves
            • Votes:
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              Dates

              • Created:
                Updated:
                Resolved:

                Development