GitHub user brkyvz opened a pull request: https://github.com/apache/spark/pull/9373
[SPARK-11419][STREAMING] Par recovery The support for closing WriteAheadLog files after writes was just merged in. Closing every file after a write is a very expensive operation as it creates many small files on S3. It's not necessary to enable it on HDFS anyway. However, when you have many small files on S3, recovery takes very long. In addition, files start stacking up pretty quickly, and deletes may not be able to keep up, therefore deletes can also be parallelized. This PR adds support for the two parallelization steps mentioned above, in addition to a couple more failures I encountered during recovery. You can merge this pull request into a Git repository by running: $ git pull https://github.com/brkyvz/spark par-recovery Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/9373.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 #9373 ---- commit 573b657bca5a77297cafbde489ba380b3372c81c Author: Burak Yavuz <brk...@gmail.com> Date: 2015-10-29T20:54:02Z progress commit 655f4bff61f1ffa21565c73eb0fe732c8ffada3e Author: Burak Yavuz <brk...@gmail.com> Date: 2015-10-29T23:53:23Z ready for PR commit 06da0d1389f658a1eb3e9aaaf1750fd7ad85567a Author: Burak Yavuz <brk...@gmail.com> Date: 2015-10-30T06:12:41Z ready for PR ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org