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https://issues.apache.org/jira/browse/HADOOP-5760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12802638#action_12802638
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Ruyue Ma commented on HADOOP-5760:
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could we make this issue as a duplicate of hadoop-6498?
> Task process hanging on an RPC call
> -----------------------------------
>
> Key: HADOOP-5760
> URL: https://issues.apache.org/jira/browse/HADOOP-5760
> Project: Hadoop Common
> Issue Type: Bug
> Components: ipc
> Reporter: Devaraj Das
>
> On a random node on a cluster, I found one task process waiting on an RPC
> call. The process has been in that state for a few days at least.
> "main" prio=10 tid=0x08069400 nid=0x6f52 in Object.wait()
> [0xf7e6c000..0xf7e6d1f8]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(Native Method)
> - waiting on <0xf1215700> (a org.apache.hadoop.ipc.Client$Call)
> at java.lang.Object.wait(Object.java:485)
> at org.apache.hadoop.ipc.Client.call(Client.java:725)
> - locked <0xf1215700> (a org.apache.hadoop.ipc.Client$Call)
> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
> at org.apache.hadoop.mapred.$Proxy0.statusUpdate(Unknown Source)
> at org.apache.hadoop.mapred.Task.statusUpdate(Task.java:691)
> at org.apache.hadoop.mapred.Task.taskCleanup(Task.java:795)
> at org.apache.hadoop.mapred.Child.main(Child.java:176)
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