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https://issues.apache.org/jira/browse/TWILL-138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15576111#comment-15576111
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ASF GitHub Bot commented on TWILL-138:
--------------------------------------
Github user chtyim commented on a diff in the pull request:
https://github.com/apache/twill/pull/14#discussion_r83471666
--- Diff: twill-api/src/main/java/org/apache/twill/api/TwillController.java
---
@@ -89,4 +90,34 @@
* @return A {@link Future} that will be completed when the restart
operation has been done.
*/
Future<String> restartInstances(String runnable, int instanceId, int...
moreInstanceIds);
+
+ /**
+ * Set the root log level for Twill applications in all containers.
+ *
+ * @param logLevel The log level for the root logger to change.
+ * @return A {@link Future} that will be completed when the set log
level operation has been done. It will carry
+ * the {@link Map} of the log level as a result with ROOT as the
logger name and the log level as value.
+ */
+ Future<Map<String, LogEntry.Level>> setLogLevel(LogEntry.Level logLevel);
--- End diff --
Also, for the `Future`, it seems like it's better just to carry
`LogEntry.Level`.
> Runtime change of Application runnable log level
> ------------------------------------------------
>
> Key: TWILL-138
> URL: https://issues.apache.org/jira/browse/TWILL-138
> Project: Apache Twill
> Issue Type: New Feature
> Components: core
> Reporter: Henry Saputra
>
> With TWILL-24 is supported for setting log level when starting the Twill
> application, next enhancement is to able to send command to update the
> aggregate log level for a particular runnable in a Twill application.
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