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Posted to issues@hive.apache.org by "Igor Kryvenko (JIRA)" <ji...@apache.org> on 2018/10/24 20:14:00 UTC

[jira] [Updated] (HIVE-14516) OrcInputFormat.SplitGenerator.callInternal() can be optimized

     [ https://issues.apache.org/jira/browse/HIVE-14516?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Igor Kryvenko updated HIVE-14516:
---------------------------------
    Attachment: HIVE-14516.01.patch

> OrcInputFormat.SplitGenerator.callInternal() can be optimized
> -------------------------------------------------------------
>
>                 Key: HIVE-14516
>                 URL: https://issues.apache.org/jira/browse/HIVE-14516
>             Project: Hive
>          Issue Type: Bug
>          Components: Transactions
>    Affects Versions: 2.2.0
>            Reporter: Eugene Koifman
>            Assignee: Igor Kryvenko
>            Priority: Major
>         Attachments: HIVE-14516.01.patch
>
>
> callIntenal() has 
>         // We can't eliminate stripes if there are deltas because the
>         // deltas may change the rows making them match the predicate.
> but in Acid 2.0, the deltas only have delete events thus eliminating stripes from  "base" of split should be safe.
> cc [~gopalv]



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