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https://issues.apache.org/jira/browse/HADOOP-5178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12670931#action_12670931
]
sam rash commented on HADOOP-5178:
----------------------------------
thread dump:
"event-driver-1" prio=3 tid=0x08a97800 nid=0x12 in Object.wait()
[0x71604000..0x71604bf0]
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:690)
- locked <0x798b5918> (a org.apache.hadoop.ipc.Client$Call)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216)
at org.apache.hadoop.mapred.$Proxy28.getMapTaskReports(Unknown Source)
at
org.apache.hadoop.mapred.JobClient.getMapTaskReports(JobClient.java:1014)
.....
shows it's stuck on a wait at:
public Writable call(Writable param, InetSocketAddress addr,
UserGroupInformation ticket)
throws InterruptedException, IOException {
Call call = new Call(param);
Connection connection = getConnection(addr, ticket, call);
connection.sendParam(call); // send the parameter
synchronized (call) {
while (!call.done) {
try {
call.wait(); // wait for the result STUCK
HERE
} catch (InterruptedException ignored) {}
}
....
> JobClient hangs when getting map-task reports
> ---------------------------------------------
>
> Key: HADOOP-5178
> URL: https://issues.apache.org/jira/browse/HADOOP-5178
> Project: Hadoop Core
> Issue Type: Bug
> Components: ipc, mapred
> Affects Versions: 0.19.0
> Reporter: sam rash
>
> a call to JobClient.getMapTaskReports() has been hung for 6+ days
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