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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6158) Data loss if the words 'merges' or 'splits' are used as Column Family name
Date Mon, 04 Jun 2012 21:09:23 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13288904#comment-13288904

Hudson commented on HBASE-6158:

Integrated in HBase-0.94 #246 (See [https://builds.apache.org/job/HBase-0.94/246/])
    HBASE-6158 Data loss if the words 'merges' or 'splits' are used as Column Family name
(Revision 1346096)

     Result = FAILURE
stack : 
Files : 
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/SplitTransaction.java

> Data loss if the words 'merges' or 'splits' are used as Column Family name
> --------------------------------------------------------------------------
>                 Key: HBASE-6158
>                 URL: https://issues.apache.org/jira/browse/HBASE-6158
>             Project: HBase
>          Issue Type: Bug
>          Components: master, regionserver
>    Affects Versions: 0.94.0
>            Reporter: Aditya Kishore
>            Assignee: Aditya Kishore
>             Fix For: 0.92.2, 0.94.1
>         Attachments: HBASE-6158_94.patch, HBASE-6158_trunk.patch
> If a table is creates with either 'merges' or 'splits' as one of the Column Family name
it can never be flushed to the disk even though the table creation (and data population) succeeds.
> The reason for this is that these two are used as temporary directory names inside the
region folder or merge and splits respectively and hence conflicts with the directories created
for CF with same name.
> A simple fix would be to uses ".merges' and ".splits" as the working folder (patch attached).
This will also be consistent with other work folder names. An alternate fix would be to declare
these words (and other similar) as reserve words and throw exception when they are used. However,
I do find the alternate approach as unnecessarily restrictive.

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