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https://issues.apache.org/jira/browse/ACCUMULO-407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13221325#comment-13221325
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John Vines commented on ACCUMULO-407:
-------------------------------------
Found some issues-
+ String propertyLogConfig = String.format("%s/conf/log4j.properties",
System.getenv("ACCUMULO_HOME"), application);
+ if (new File(logConfig).exists()) {
+ PropertyConfigurator.configureAndWatch(propertyLogConfig, 5000);
line 1 should not have the application argument
line 2 should be new File propertyLogConfig
To put aside these minor foibles, there are a few questions we need to ask
ourselves in this implementation.
1. Do we want to be watching both the *_logger.xml AND the log4j.properties?
2. Do we want to provide a mechanism to pick up the introduction of an
application specific logger.xml file after start up?
3. Do we want to continue to have, by default, 2 different logs for each
application, or can we just have 1?
As for me,
1. Not if we don't have to. I believe the log4j.properties is only used as a
default until we start watching the *_logger.xml.
2. Not for 1.4, but definitely in the future.
3. Unsure, but not for 1.4
> Look into on the fly log4j configuration
> ----------------------------------------
>
> Key: ACCUMULO-407
> URL: https://issues.apache.org/jira/browse/ACCUMULO-407
> Project: Accumulo
> Issue Type: Improvement
> Affects Versions: 1.4.0
> Reporter: John Vines
> Assignee: Josh Elser
> Fix For: 1.4.0
>
> Attachments: ACCUMULO-407-auto-reload-log4j.patch
>
>
> For long running systems, logs may not want to be kept at the debug level
> 24/7. But there may be times where a single long query may be want to looked
> into without cycling the entire systems. We think it may be possible to make
> log4j configurable on fly, so lets start by looking into how difficult it
> will be.
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