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https://issues.apache.org/jira/browse/HBASE-19365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Elser resolved HBASE-19365.
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Hadoop Flags: Reviewed
Resolution: Fixed
Thanks for the review, [~vjasani]!
> FSTableDescriptors#get() can return null reference, in some cases, it is not
> checked
> ------------------------------------------------------------------------------------
>
> Key: HBASE-19365
> URL: https://issues.apache.org/jira/browse/HBASE-19365
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.2.6
> Reporter: Hua Xiang
> Assignee: Josh Elser
> Priority: Minor
> Fix For: 1.7.0
>
>
> In one of our cases, 1.2.0 based master could not start because the null
> reference is not checked. Master crashed because of the following exception.
> {code}
> 2017-11-20 08:30:20,178 FATAL org.apache.hadoop.hbase.master.HMaster: Failed
> to become active master
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.master.AssignmentManager.rebuildUserRegions(AssignmentManager.java:2993)
> at
> org.apache.hadoop.hbase.master.AssignmentManager.joinCluster(AssignmentManager.java:494)
> at
> org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:821)
> at org.apache.hadoop.hbase.master.HMaster.access$500(HMaster.java:192)
> at org.apache.hadoop.hbase.master.HMaster$1.run(HMaster.java:1827)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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