GitHub user uncleGen opened a pull request:
https://github.com/apache/spark/pull/16370
[SPARK-18960][SQL][SS] Avoid double reading file which is being copied.
## What changes were proposed in this pull request?
In HDFS, when we copy a file into target directory, there will a temporary
`._COPY_` file for a period of time. The duration depends on file size. If we
do not skip this file, we will may read the same data for two times.
## How was this patch tested?
update unit test
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/uncleGen/spark SPARK-18960
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16370.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 #16370
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commit 1d248c30bb6872494b82fe16a584b9b801058c58
Author: uncleGen <[email protected]>
Date: 2016-12-21T03:36:04Z
cp
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