GitHub user navis opened a pull request:
https://github.com/apache/spark/pull/10572
SPARK-12619 Combine small files in a hadoop directory into single split
When a directory contains too many (small) files, whole spark cluster will
be exhausted scheduling tasks created for each file. Custom input format can
handle that but if you're using hive metastore, it could hardly be an option.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/navis/spark SPARK-12619
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10572.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #10572
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commit 055f6135aaa73ab1ff12fa33a77d9a776063336f
Author: navis.ryu <[email protected]>
Date: 2016-01-04T12:42:10Z
SPARK-12619 Combine small files in a hadoop directory into single split
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