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https://issues.apache.org/jira/browse/TAJO-1848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14746317#comment-14746317
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ASF GitHub Bot commented on TAJO-1848:
--------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/tajo/pull/759
> ShutdownHook in TajoMaster can throw NPE if serviceInit() is failed.
> --------------------------------------------------------------------
>
> Key: TAJO-1848
> URL: https://issues.apache.org/jira/browse/TAJO-1848
> Project: Tajo
> Issue Type: Bug
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Priority: Minor
> Fix For: 0.11.0
>
>
> If serviceInit() is failed, ShutdownHook in TajoMaster can throw NPE.
> {noformat}
> // If embedded derby is used as catalog, shutdown it.
> if
> (catalogServer.getStoreClassName().equals("org.apache.tajo.catalog.store.DerbyStore")
> && AbstractDBStore.needShutdown(catalogServer.getStoreUri())) {
> DerbyStore.shutdown();
> }
> {noformat}
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