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