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https://issues.apache.org/jira/browse/TAJO-645?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyunsik Choi updated TAJO-645:
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Fix Version/s: 1.0-incubating
> Task.Reporter can cause NPE during reporting.
> ---------------------------------------------
>
> Key: TAJO-645
> URL: https://issues.apache.org/jira/browse/TAJO-645
> Project: Tajo
> Issue Type: Bug
> Components: worker
> Affects Versions: 0.8-incubating, 1.0-incubating
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Priority: Minor
> Fix For: 0.8-incubating, 1.0-incubating
>
> Attachments: TAJO-645.patch
>
>
> See the title. This problem causes the following error messages.
> {noformat}
> 014-03-03 19:52:27,680 ERROR worker.Task (Task.java:run(687)) -
> java.lang.NullPointerException
> at org.apache.tajo.worker.Task$Reporter$1.run(Task.java:681)
> at java.lang.Thread.run(Thread.java:724)
> 2014-03-03 19:52:27,689 INFO worker.Task (Task.java:<init>(181)) - Output
> File Path:
> hdfs://localhost:52744/tmp/tajo-hyunsik/staging/q_1393843945346_0001/RESULT/part-01-000000
> {noformat}
> The main cause is to start the report thread in Task before this.context is
> initialized as follows:
> {code:java}
> this.reporter = new Reporter(taskId, masterProxy);
> this.reporter.startCommunicationThread();
> ...
> this.context = new TaskAttemptContext(systemConf, taskId,
> request.getFragments().toArray(new
> FragmentProto[request.getFragments().size()]), taskDir);
> {code}
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