Apache9 opened a new pull request #4050:
URL: https://github.com/apache/hadoop/pull/4050
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### Description of PR
Use Slf4jRequestLog in HttpRequestLog, so we do not need to depend on actual
log appender implementations in code.
For keeping the rolling way the safe, I have to use DailyRollingFileAppender
but the DRFA in log4j1 does not support removing old files, so we loss the
ability of 'RetainDays'. Anyway, later after we upgrade to log4j2, we can add
this ability back.
### How was this patch tested?
Introduced a new UT. Better to deploy a hadoop cluster, enable request log
and check the output.
### For code changes:
- [X] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] 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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