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https://issues.apache.org/jira/browse/HDDS-1714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16869277#comment-16869277
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luhuachao commented on HDDS-1714:
---------------------------------
this error appear after i exec *_ozone sh token get_* or *mr job on ozone* and
restart OM; The quick fix for me is delete dir om.db, but after doing this ,
the data writed to ozone befor will not be accessed .
> When restart om with Kerberos, NPException happened at
> addPersistedDelegationToken
> -----------------------------------------------------------------------------------
>
> Key: HDDS-1714
> URL: https://issues.apache.org/jira/browse/HDDS-1714
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Manager
> Affects Versions: 0.4.0
> Reporter: luhuachao
> Priority: Major
>
> the error stack:
> {code:java}
> 2019-06-21 15:17:41,744 [main] INFO - Loaded 11 tokens
> 2019-06-21 15:17:41,745 [main] INFO - Loading token state into token manager.
> 2019-06-21 15:17:41,748 [main] ERROR - Failed to start the OzoneManager.
> java.lang.NullPointerException
> at
> org.apache.hadoop.ozone.security.OzoneDelegationTokenSecretManager.addPersistedDelegationToken(OzoneDelegationTokenSecretManager.java:371)
> at
> org.apache.hadoop.ozone.security.OzoneDelegationTokenSecretManager.loadTokenSecretState(OzoneDelegationTokenSecretManager.java:358)
> at
> org.apache.hadoop.ozone.security.OzoneDelegationTokenSecretManager.<init>(OzoneDelegationTokenSecretManager.java:96)
> at
> org.apache.hadoop.ozone.om.OzoneManager.createDelegationTokenSecretManager(OzoneManager.java:608)
> at org.apache.hadoop.ozone.om.OzoneManager.<init>(OzoneManager.java:332)
> at org.apache.hadoop.ozone.om.OzoneManager.createOm(OzoneManager.java:941)
> at org.apache.hadoop.ozone.om.OzoneManager.main(OzoneManager.java:859)
> 2019-06-21 15:17:41,753 [pool-2-thread-1] INFO - SHUTDOWN_MSG:
> {code}
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