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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2660) Need better exception handling in RCFile tolerate corruptions mode
Date Fri, 16 Dec 2011 23:50:31 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13171316#comment-13171316
] 

Hudson commented on HIVE-2660:
------------------------------

Integrated in Hive-trunk-h0.21 #1153 (See [https://builds.apache.org/job/Hive-trunk-h0.21/1153/])
    HIVE-2660 Need better exception handling in RCFile tolerate corruptions
mode (Ramkumar Vadali via namit)

namit : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1215226
Files : 
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/RCFile.java

                
> Need better exception handling in RCFile tolerate corruptions mode
> ------------------------------------------------------------------
>
>                 Key: HIVE-2660
>                 URL: https://issues.apache.org/jira/browse/HIVE-2660
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Ramkumar Vadali
>            Assignee: Ramkumar Vadali
>            Priority: Minor
>         Attachments: HIVE-2660.1.patch, HIVE-2660.patch
>
>
> The exception handling in nextKeyValueTolerateCorruptions treats IOException as follows:
>  - if EOFException, corrupt, can be tolerated
>  - If CheckSumException, corrupt, can be tolerated
>  - else not a corruption, re-throw
> But the compression code can also throw IOException in case of corruption, which will
get re-thrown in this case.
> The correct way of handling IOException is:
>  - if BlockMissingException, re-throw.
>  - if not BlockMissingException -> corruption, can be tolerated

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