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Posted to issues@ozone.apache.org by "Neil Joshi (Jira)" <ji...@apache.org> on 2022/06/15 00:35:00 UTC
[jira] [Created] (HDDS-6888) NPE raised by freon RandomKeys on ShutdownHook()
Neil Joshi created HDDS-6888:
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Summary: NPE raised by freon RandomKeys on ShutdownHook()
Key: HDDS-6888
URL: https://issues.apache.org/jira/browse/HDDS-6888
Project: Apache Ozone
Issue Type: Bug
Reporter: Neil Joshi
Freon load testing randomkeys throws a null pointer exception on ShutdownHook when RandomKeys.printStats is called.
Issue can be reproduced on docker development cluster, in this case ozone-ha as follows:
hadoop-ozone/dist/target/ozone-.../compose/ozone-ha$ docker-compose up {-}d -{-}scale datanode=3
$ docker-compose exec scm1 bash
bash-4.2$ _ozone freon randomkeys --numOfVolumes=1 --numOfBuckets=1 --numOfKeys=2 --keySize=1024000_
{code:java}
Status: Success
Git Base Revision: a3b9c37a397ad4188041dd80621bdeefc46885f2
Number of Volumes created: 1
Number of Buckets created: 1
Number of Keys added: 2
2022-06-14 23:57:38,841 [Thread-3] WARN util.ShutdownHookManager: ShutdownHook 'RandomKeyGenerator$$Lambda$124/0x0000000840276840' failed, java.util.concurrent.ExecutionException: java.lang.NullPointerException
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:205)
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$0(RandomKeyGenerator.java:399)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829){code}
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