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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14885) NullPointerException in HMaster#normalizeRegions() due to missing TableDescriptor
Date Thu, 26 Nov 2015 07:02:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15028285#comment-15028285
] 

Hudson commented on HBASE-14885:
--------------------------------

SUCCESS: Integrated in HBase-Trunk_matrix #503 (See [https://builds.apache.org/job/HBase-Trunk_matrix/503/])
HBASE-14885 NullPointerException in HMaster#normalizeRegions() due to (tedyu: rev e73a9594c218ed969a2f5b0b356d7b8d0e1474c0)
* hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java


> NullPointerException in HMaster#normalizeRegions() due to missing TableDescriptor
> ---------------------------------------------------------------------------------
>
>                 Key: HBASE-14885
>                 URL: https://issues.apache.org/jira/browse/HBASE-14885
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.3.0
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>             Fix For: 2.0.0, 1.2.0, 1.3.0
>
>         Attachments: 14885-branch-1.txt, 14885-v1.txt
>
>
> During system test on Windows, we observed the following in master log:
> {code}
> 2015-11-23 11:31:38,853 ERROR org.apache.hadoop.hbase.master.normalizer.RegionNormalizerChore:
Caught error^M
> java.lang.NullPointerException^M
>   at org.apache.hadoop.hbase.master.HMaster.normalizeRegions(HMaster.java:1396)^M
>   at org.apache.hadoop.hbase.master.normalizer.RegionNormalizerChore.chore(RegionNormalizerChore.java:49)^M
>   at org.apache.hadoop.hbase.ScheduledChore.run(ScheduledChore.java:185)^M
>   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)^M
>   at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)^M
>   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)^M
>   at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)^M
>   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)^M
>   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)^M
>   at java.lang.Thread.run(Thread.java:745)^M
> {code}
> The NullPointerException came from the second line below:
> {code}
>       for(TableName table : allEnabledTables) {
>         if (table.isSystemTable() || !getTableDescriptors().get(table).isNormalizationEnabled())
{
> {code}
> It seems TableDescriptor for some table was absent.
> normalizeRegions() should deal with such scenario without producing NPE.



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