[jira] [Resolved] (SPARK-14259) Add config to control maximum number of files when coalescing partitions

["Yin Huai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-14259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yin Huai resolved SPARK-14259.
------------------------------
       Resolution: Fixed
    Fix Version/s: 2.0.0

Issue resolved by pull request 12068
[https://github.com/apache/spark/pull/12068]

> Add config to control maximum number of files when coalescing partitions
> ------------------------------------------------------------------------
>
>                 Key: SPARK-14259
>                 URL: https://issues.apache.org/jira/browse/SPARK-14259
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Nong Li
>            Priority: Minor
>             Fix For: 2.0.0
>
>
> The FileSourceStrategy currently has a config to control the maximum byte size of coalesced partitions. It is helpful to also have a config to control the maximum number of files as even small files have a non-trivial fixed cost. The current packing can put a lot of small files together which cases straggler tasks.



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