Task process hanging on an RPC call
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Key: HADOOP-5760
URL: https://issues.apache.org/jira/browse/HADOOP-5760
Project: Hadoop Core
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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