GitHub user uncleGen opened a pull request:
https://github.com/apache/spark/pull/15827
[SPARK-18187][STREAMING] CompactibleFileStreamLog should not use
"compactInterval" direcly with user setting.
## What changes were proposed in this pull request?
CompactibleFileStreamLog relys on "compactInterval" to detect a compaction
batch. If the "compactInterval" is reset by user, CompactibleFileStreamLog will
return wrong answer, resulting data loss. This PR procides a way to check the
validity of 'compactInterval', and calculate an appropriate value.
## How was this patch tested?
When restart a stream, we change the
'spark.sql.streaming.fileSource.log.compactInterval' different with the former
one.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/uncleGen/spark SPARK-18187
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15827.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 #15827
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commit 65395dddb505f6084db471430da1486d75a77e2a
Author: genmao.ygm <genmao.ygm@genmaoygmdemacbook-air.local>
Date: 2016-11-09T08:21:09Z
SPARK-18187: CompactibleFileStreamLog should not rely on "compactInterval"
to detect a compaction batch
commit d556933e0f039d661989e07f381aff185c9fac1b
Author: genmao.ygm <genmao.ygm@genmaoygmdemacbook-air.local>
Date: 2016-11-09T08:24:53Z
comment update
commit 8b56f70b2dffd69dbc37007e923f3d5a56fce039
Author: genmao.ygm <genmao.ygm@genmaoygmdemacbook-air.local>
Date: 2016-11-09T08:34:11Z
revert
commit 4a7e28c4e372caa3b16b979273577bd6aa2c11f3
Author: genmao.ygm <genmao.ygm@genmaoygmdemacbook-air.local>
Date: 2016-11-09T08:35:13Z
unit test - compacat metadata log
change compactInterval from 4 to 5
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