You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2019/07/02 16:33:00 UTC
[jira] [Commented] (HBASE-22650) NPE in AssignmentManager (master
crash on startup)
[ https://issues.apache.org/jira/browse/HBASE-22650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16877125#comment-16877125 ]
stack commented on HBASE-22650:
-------------------------------
Patch seems fine. Any other details on cluster at the time? Did it recover subsequently or after you added the patch? Trying to figure how region location was null in the first place. Thank you.
> 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: 1.2.12, 1.3.5
> Reporter: Sylvain Veyrié
> Priority: Critical
> Labels: patch
> Attachments: AssignmentManager-NPE.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+
>
>
>
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)