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From "Elliot West (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12202) NPE thrown when reading legacy ACID delta files
Date Wed, 21 Oct 2015 17:41:27 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14967524#comment-14967524
] 

Elliot West commented on HIVE-12202:
------------------------------------

And another clarification to an earlier comment of mine: when I said 'a lack of resilience',
I meant 'and not a lack of resilience'. Apologies, not quite with it today!

> 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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