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From "Sahil Takiar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-14165) Remove Hive file listing during split computation
Date Wed, 21 Dec 2016 07:36:58 GMT

     [ https://issues.apache.org/jira/browse/HIVE-14165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sahil Takiar updated HIVE-14165:
--------------------------------
    Attachment: HIVE-14165.06.patch

> Remove Hive file listing during split computation
> -------------------------------------------------
>
>                 Key: HIVE-14165
>                 URL: https://issues.apache.org/jira/browse/HIVE-14165
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: 2.1.0
>            Reporter: Abdullah Yousufi
>            Assignee: Sahil Takiar
>         Attachments: HIVE-14165.02.patch, HIVE-14165.03.patch, HIVE-14165.04.patch, HIVE-14165.05.patch,
HIVE-14165.06.patch, HIVE-14165.patch
>
>
> The Hive side listing in FetchOperator.java is unnecessary, since Hadoop's FileInputFormat.java
will list the files during split computation anyway to determine their size. One way to remove
this is to catch the InvalidInputFormat exception thrown by FileInputFormat#getSplits() on
the Hive side instead of doing the file listing beforehand.
> For S3 select queries on partitioned tables, this results in a 2x speedup.



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