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From "Cheng (JIRA)" <>
Subject [jira] Commented: (CHUKWA-159) Unregister incorrect adaptor ID
Date Mon, 20 Apr 2009 19:07:48 GMT


Cheng commented on CHUKWA-159:

There are couple places where a metrics adaptor gets unregistered

1 Agent restart as mentioned in chukwa-5. 

2 Metrics log file doesn't exist or it's not readable.

3 Race condition as mentioned by Chukwa-68

After investigation, #1 and #2 might not be the cause. I will focus on #3.

> Unregister incorrect adaptor ID
> -------------------------------
>                 Key: CHUKWA-159
>                 URL:
>             Project: Hadoop Chukwa
>          Issue Type: Bug
>          Components: data collection
>         Environment: Redhat EL 5.1, Java 6
>            Reporter: Eric Yang
>            Assignee: Cheng
>            Priority: Blocker
> Two of the long running clusters show the same symptoms, where jvm and namenode metrics
files are unregistered when they shouldn't.  This may not be the same issue as CHUKWA-5. 
However, someone should take a closer look at the problem associate with ChukwaAgent and ChukwaAgentController.

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