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From: "Jean-Marc Spaggiari (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
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Subject: [jira] [Commented] (HBASE-11794) StripeStoreFlusher causes
 NullPointerException and Region down
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    [ https://issues.apache.org/jira/browse/HBASE-11794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14107500#comment-14107500 ] 

Jean-Marc Spaggiari commented on HBASE-11794:
---------------------------------------------

List is initialized empty. So even on failure, it will be returned empty, no?

> StripeStoreFlusher causes NullPointerException and Region down
> --------------------------------------------------------------
>
>                 Key: HBASE-11794
>                 URL: https://issues.apache.org/jira/browse/HBASE-11794
>             Project: HBase
>          Issue Type: Bug
>          Components: Compaction
>    Affects Versions: 0.98.3, 0.98.4, 0.98.5
>            Reporter: jeongmin kim
>            Priority: Critical
>         Attachments: HBASE_11794.patch
>
>
> StoreFlusher.flushSnapshot() mustn't return null value.
> But StripeStoreFlusher.flushSnapshot() does.
> It cause NullPointerException at org.apache.hadoop.hbase.regionserver.HStore.flushCache(HStore.java:802)
> and this makes regions dead after exhaustive retries and no recovery available from it.
> the code (StripeStoreFlusher:64) has to be changed 
> ===============
> from
>     List<Path> result = null 
> to
>      List<Path> result = new ArrayList<Path>();
>  ===============
> to return a empty list not null value.
>     



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