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https://issues.apache.org/jira/browse/YARN-4246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14950215#comment-14950215
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nijel commented on YARN-4246:
-----------------------------
thanks [~varun_saxena] for reporting
the same issue is there in applicationattempt status also
{noformat}
./yarn applicationattempt -status appattempt_1444389134985_0001_000001
15/10/09 16:53:19 WARN util.NativeCodeLoader: Unable to load native-hadoop
library for your platform... using builtin-java classes where applicable
15/10/09 16:53:20 INFO impl.TimelineClientImpl: Timeline service address:
http://10.18.130.110:55033/ws/v1/timeline/
15/10/09 16:53:20 INFO client.RMProxy: Connecting to ResourceManager at
host-10-18-130-110/10.18.130.110:8032
15/10/09 16:53:21 INFO client.AHSProxy: Connecting to Application History
server at /10.18.130.110:55034
Exception in thread "main" java.lang.NullPointerException
at
org.apache.hadoop.yarn.client.cli.ApplicationCLI.printApplicationAttemptReport(ApplicationCLI.java:352)
at org.apache.hadoop.yarn.client.cli.ApplicationCLI.run(ApplicationCLI.java:182)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
at org.apache.hadoop.yarn.client.cli.ApplicationCLI.main(ApplicationCLI.java:89)
{noformat}
> NPE while listing app attempt
> -----------------------------
>
> Key: YARN-4246
> URL: https://issues.apache.org/jira/browse/YARN-4246
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Varun Saxena
> Assignee: nijel
>
> {noformat}
> Exception in thread "main" java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.client.cli.ApplicationCLI.listApplicationAttempts(ApplicationCLI.java:669)
> at
> org.apache.hadoop.yarn.client.cli.ApplicationCLI.run(ApplicationCLI.java:233)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
> at
> org.apache.hadoop.yarn.client.cli.ApplicationCLI.main(ApplicationCLI.java:89)
> {noformat}
> This is because AM container id can be null if AM container hasnt been
> allocated. In ApplicationCLI#listApplicationAttempts we should check whether
> AM container ID is null instead of directly calling toString.
> {code}
> writer.printf(APPLICATION_ATTEMPTS_PATTERN, appAttemptReport
> .getApplicationAttemptId(), appAttemptReport
> .getYarnApplicationAttemptState(), appAttemptReport
> .getAMContainerId().toString(), appAttemptReport.getTrackingUrl());
> {code}
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