GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/8236
[SPARK-7837] [SQL] Avoids double closing output writers when commitTask()
fails
When inserting data into a `HadoopFsRelation`, if `commitTask()` of the
writer container fails, `abortTask()` will be invoked. However, both
`commitTask()` and `abortTask()` try to close the output writer(s). The problem
is that, closing underlying writers may not be an idempotent operation. E.g.,
`ParquetRecordWriter.close()` throws NPE when called twice.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark spark-7837/double-closing
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8236.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 #8236
----
commit 9b668c3ca708b7f899ecbab21ff96b3e35fb2ea7
Author: Cheng Lian <[email protected]>
Date: 2015-08-17T09:30:15Z
Avoids double closing output writers when commitTask() fails
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