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https://issues.apache.org/jira/browse/HBASE-22650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sylvain Veyrié updated HBASE-22650:
-----------------------------------
Attachment: HBASE-22650.branch-1.001.patch
Status: Patch Available (was: Open)
> NPE in AssignmentManager (master crash on startup)
> --------------------------------------------------
>
> Key: HBASE-22650
> URL: https://issues.apache.org/jira/browse/HBASE-22650
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 1.3.5, 1.2.12
> Reporter: Sylvain Veyrié
> Priority: Critical
> Labels: patch
> Attachments: AssignmentManager-NPE.patch,
> HBASE-22650.branch-1.001.patch
>
>
> On HMaster Startup:
>
> {quote}2019-07-02 12:38:11,312 FATAL [orc3:16000.activeMasterManager]
> master.HMaster: Failed to become active master
> java.lang.NullPointerException
> at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
> at
> java.util.concurrent.ConcurrentHashMap.containsKey(ConcurrentHashMap.java:964)
> at
> java.util.concurrent.ConcurrentHashMap$KeySetView.contains(ConcurrentHashMap.java:4558)
> at
> java.util.Collections$UnmodifiableCollection.contains(Collections.java:1032)
> at
> org.apache.hadoop.hbase.master.AssignmentManager.rebuildUserRegions(AssignmentManager.java:3094)
> at
> org.apache.hadoop.hbase.master.AssignmentManager.joinCluster(AssignmentManager.java:495)
> at
> org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:830)
> at org.apache.hadoop.hbase.master.HMaster.access$600(HMaster.java:202)
> at org.apache.hadoop.hbase.master.HMaster$2.run(HMaster.java:1883)
> at java.lang.Thread.run(Thread.java:748)
> 2019-07-02 12:38:11,312 FATAL [orc3:16000.activeMasterManager]
> master.HMaster: Master server abort: loaded coprocessors are: []
> 2019-07-02 12:38:11,312 FATAL [orc3:16000.activeMasterManager]
> master.HMaster: Unhandled exception. Starting shutdown.
> java.lang.NullPointerException
> at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
> at
> java.util.concurrent.ConcurrentHashMap.containsKey(ConcurrentHashMap.java:964)
> at
> java.util.concurrent.ConcurrentHashMap$KeySetView.contains(ConcurrentHashMap.java:4558)
> at
> java.util.Collections$UnmodifiableCollection.contains(Collections.java:1032)
> at
> org.apache.hadoop.hbase.master.AssignmentManager.rebuildUserRegions(AssignmentManager.java:3094)
> at
> org.apache.hadoop.hbase.master.AssignmentManager.joinCluster(AssignmentManager.java:495)
> at
> org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:830)
> at org.apache.hadoop.hbase.master.HMaster.access$600(HMaster.java:202)
> at org.apache.hadoop.hbase.master.HMaster$2.run(HMaster.java:1883)
> at java.lang.Thread.run(Thread.java:748)
> {quote}
> It happens when regionLocation is null, which may happen just above on line
> 3086 (or as returned by getRegionServer)
> We had this on 1.2.12 with the corresponding patch, but since it is not
> supported anymore, did not submit it.
> Attached is the patch for 1.3.5. Did not test it in 1.4+
>
>
>
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