Ivan Mitic created HADOOP-9970:
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Summary: TaskTracker hung after failed reconnect to the JobTracker
Key: HADOOP-9970
URL: https://issues.apache.org/jira/browse/HADOOP-9970
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 1.3.0
Reporter: Ivan Mitic
Assignee: Ivan Mitic
TaskTracker hung after failed reconnect to the JobTracker.
This is the problematic piece of code:
{code}
this.distributedCacheManager = new TrackerDistributedCacheManager(
this.fConf, taskController);
this.distributedCacheManager.startCleanupThread();
this.jobClient = (InterTrackerProtocol)
UserGroupInformation.getLoginUser().doAs(
new PrivilegedExceptionAction<Object>() {
public Object run() throws IOException {
return RPC.waitForProxy(InterTrackerProtocol.class,
InterTrackerProtocol.versionID,
jobTrackAddr, fConf);
}
});
{code}
In case RPC.waitForProxy() throws, TrackerDistributedCacheManager cleanup
thread will never be stopped, and given that it is a non daemon thread it will
keep TT up forever.
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