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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12202) NPE thrown when reading legacy ACID delta files
Date Mon, 02 Nov 2015 19:46:27 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14985892#comment-14985892
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Eugene Koifman commented on HIVE-12202:
---------------------------------------

+1

> NPE thrown when reading legacy ACID delta files
> -----------------------------------------------
>
>                 Key: HIVE-12202
>                 URL: https://issues.apache.org/jira/browse/HIVE-12202
>             Project: Hive
>          Issue Type: Bug
>          Components: Transactions
>    Affects Versions: 1.3.0
>            Reporter: Elliot West
>            Assignee: Elliot West
>              Labels: transactions
>         Attachments: HIVE-12202.0.patch
>
>
> When reading legacy ACID deltas of the form {{delta_$startTxnId_$endTxnId}} a {{NullPointerException}}
is thrown on:
> {code:title=org.apache.hadoop.hive.ql.io.AcidUtils.deserializeDeltas#371}
> if(dmd.getStmtIds().isEmpty()) {
> {code}
> The older ACID data format (pre-Hive 1.3.0) which does not include the statement ID,
and code written for that format should still be supported. Therefore the above condition
should also include a null check or alternatively {{AcidInputFormat.DeltaMetaData}} should
never return null, and return an empty list in this specific scenario.



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