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Posted to hdfs-dev@hadoop.apache.org by "Anu Engineer (Jira)" <ji...@apache.org> on 2019/10/03 23:26:00 UTC

[jira] [Resolved] (HDDS-2200) Recon does not handle the NULL snapshot from OM DB cleanly.

     [ https://issues.apache.org/jira/browse/HDDS-2200?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Anu Engineer resolved HDDS-2200.
--------------------------------
    Fix Version/s: 0.5.0
       Resolution: Fixed

Committed to the trunk. Thanks for the contribution.

> Recon does not handle the NULL snapshot from OM DB cleanly.
> -----------------------------------------------------------
>
>                 Key: HDDS-2200
>                 URL: https://issues.apache.org/jira/browse/HDDS-2200
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>          Components: Ozone Recon
>            Reporter: Aravindan Vijayan
>            Assignee: Aravindan Vijayan
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.5.0
>
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> {code}
> 2019-09-27 11:35:19,835 [pool-9-thread-1] ERROR      - Null snapshot location got from OM.
> 2019-09-27 11:35:19,839 [pool-9-thread-1] INFO       - Calling reprocess on Recon tasks.
> 2019-09-27 11:35:19,840 [pool-7-thread-1] INFO       - Starting a 'reprocess' run of ContainerKeyMapperTask.
> 2019-09-27 11:35:20,069 [pool-7-thread-1] INFO       - Creating new Recon Container DB at /tmp/recon/db/recon-container.db_1569609319840
> 2019-09-27 11:35:20,069 [pool-7-thread-1] INFO       - Cleaning up old Recon Container DB at /tmp/recon/db/recon-container.db_1569609258721.
> 2019-09-27 11:35:20,144 [pool-9-thread-1] ERROR      - Unexpected error :
> java.util.concurrent.ExecutionException: java.lang.NullPointerException
>         at java.util.concurrent.FutureTask.report(FutureTask.java:122)
>         at java.util.concurrent.FutureTask.get(FutureTask.java:192)
>         at org.apache.hadoop.ozone.recon.tasks.ReconTaskControllerImpl.reInitializeTasks(ReconTaskControllerImpl.java:181)
>         at org.apache.hadoop.ozone.recon.spi.impl.OzoneManagerServiceProviderImpl.syncDataFromOM(OzoneManagerServiceProviderImpl.java:333)
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>         at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>         at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.NullPointerException
>         at org.apache.hadoop.ozone.recon.tasks.ContainerKeyMapperTask.reprocess(ContainerKeyMapperTask.java:81)
>         at org.apache.hadoop.ozone.recon.tasks.ReconTaskControllerImpl.lambda$reInitializeTasks$3(ReconTaskControllerImpl.java:176)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> {code}



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