GitHub user 10110346 opened a pull request:
https://github.com/apache/spark/pull/18507
[SPARK-21283][core]FileOutputStream should be created as append mode
## What changes were proposed in this pull request?
`FileAppender` is used to write `stderr` and `stdout` files in
`ExecutorRunner`, But before writing `ErrorStream` into the the `stderr` file,
the header information has been written into ,if FileOutputStream is not
created as append mode, the header information will be lost
## How was this patch tested?
unit test case
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/10110346/spark wip-lx-0703
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18507.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 #18507
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commit 9788b19d06800cce243a79acc189c3424912f393
Author: liuxian <[email protected]>
Date: 2017-07-03T03:27:09Z
FileOutputStream should be created as append mode
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