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https://issues.apache.org/jira/browse/HDDS-7934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Doroszlai resolved HDDS-7934.
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Fix Version/s: 1.4.0
Resolution: Fixed
> NPE in RandomKeyGenerator's shutdown hook
> -----------------------------------------
>
> Key: HDDS-7934
> URL: https://issues.apache.org/jira/browse/HDDS-7934
> Project: Apache Ozone
> Issue Type: Bug
> Components: freon
> Reporter: George Huang
> Assignee: Chung En Lee
> Priority: Major
> Labels: newbie, pull-request-available
> Fix For: 1.4.0
>
>
>
> {code:java}
> ***************************************************
> Status: Success
> Git Base Revision: 39dba86fbcf282ba02f5c32e6e2246cf98ff2cdf
> Number of Volumes created: 3
> Number of Buckets created: 30
> Number of Keys added: 900
> 23/02/08 13:57:09 WARN util.ShutdownHookManager: ShutdownHook
> 'RandomKeyGenerator$$Lambda$52/1000171161' failed,
> java.util.concurrent.ExecutionException: java.lang.NullPointerException
> java.util.concurrent.ExecutionException: java.lang.NullPointerException
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:206)
> at
> org.apache.hadoop.ozone.util.ShutdownHookManager.executeShutdown(ShutdownHookManager.java:132)
> at
> org.apache.hadoop.ozone.util.ShutdownHookManager$1.run(ShutdownHookManager.java:103)
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.ozone.freon.RandomKeyGenerator.printStats(RandomKeyGenerator.java:487)
> at
> org.apache.hadoop.ozone.freon.RandomKeyGenerator.lambda$addShutdownHook$0(RandomKeyGenerator.java:399)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {code}
>
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