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https://issues.apache.org/jira/browse/HADOOP-19753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18044247#comment-18044247
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ASF GitHub Bot commented on HADOOP-19753:
-----------------------------------------
boqiang opened a new pull request, #8129:
URL: https://github.com/apache/hadoop/pull/8129
### Description of PR
Support a new environment variable HADOOP_LOG_DAEMON_MODE to allow
dynamically setting HADOOP_ROOT_LOGGER and HADOOP_LOGFILE to same values as if
using --daemon option to run hadoop services
hadoop systemd services run the daemon process in the forground without
using --daemon option. However, HADOOP_ROOT_LOGGER and HADOOP_LOGFILE values
will only be set dynamically when using --daemon flag. For systemd services, we
want to have same default settings for HADOOP_ROOT_LOGGER and HADOOP_LOGFILE as
the background daemon case.
### How was this patch tested?
This feature has been tested on workday real production environment.
### For code changes:
- [ ] 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?
> Support HADOOP_LOG_DAEMON_MODE environment variable
> ---------------------------------------------------
>
> Key: HADOOP-19753
> URL: https://issues.apache.org/jira/browse/HADOOP-19753
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Boqiang Liang
> Priority: Major
>
> Support a new environment variable HADOOP_LOG_DAEMON_MODE to allow
> dynamically setting HADOOP_ROOT_LOGGER and HADOOP_LOGFILE to same values as
> if using --daemon option to run hadoop services
> hadoop systemd services run the daemon process in the forground without using
> --daemon option. However, HADOOP_ROOT_LOGGER and HADOOP_LOGFILE values will
> only be set dynamically when using --daemon flag. For systemd services, we
> want to have same default settings for HADOOP_ROOT_LOGGER and HADOOP_LOGFILE
> as the background daemon case.
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