monthonk opened a new pull request #3908:
URL: https://github.com/apache/hadoop/pull/3908
### Description of PR
fs.s3a.buffer.dir defaults to hadoop.tmp.dir which is /tmp or similar. A lot
of systems don't clean up /tmp until reboot -and if they stay up for a long
time then they accrue files written through s3a staging committer from spark
containers which fail.
Fix: use ${env.LOCAL_DIRS:-${hadoop.tmp.dir}}/s3a as the option so that if
env.LOCAL_DIRS is set is used over hadoop.tmp.dir. YARN-deployed apps will use
that for the buffer dir. When the app container is destroyed, so is the
directory.
### How was this patch tested?
Injected LOCAL_DIRS env and verified that it was picked up by S3A. Also when
it is not set, verified that hadoop.tmp.dir would be used as a fallback.
### For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [x] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
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