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ambari-metrics/ambari-metrics-timelineservice/conf/unix/ambari-metrics-collector
 (line 224)
<https://reviews.apache.org/r/40723/#comment167460>

    Will this command run list * # of tables time? Or will check the output of 
list run once in a single try against the list of defined tables ?


- Sid Wagle


On Nov. 25, 2015, 11:12 p.m., Aravindan Vijayan wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/40723/
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> 
> (Updated Nov. 25, 2015, 11:12 p.m.)
> 
> 
> Review request for Ambari, Dmytro Sen, Sumit Mohanty, and Sid Wagle.
> 
> 
> Bugs: AMBARI-14078
>     https://issues.apache.org/jira/browse/AMBARI-14078
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> PROBLEM
> Collector startup takes greater than 6mins even though the 
> ApplicationHistoryServer is up in 2mins in secure cluster.
> 
> Bug
> The collector startup script uses HBase shell to poll and check if the 
> metrics schema is created. HBase shell takes a long time to respond in a 
> secure environment without kinit.
> 
> Fix
> Doing a "kinit" before starting up the metrics collector solves the 
> performance issue
> 
> 
> -----------------
> 
> NOTE : Some metrics collector startup script STDOUT echo statements (4-5) 
> have also been piped to the ambari-metrics-collector.out file to facilitate 
> debugging. Hence, the .out file will be appended to, across collector START 
> requests.
> 
> 
> Diffs
> -----
> 
>   
> ambari-metrics/ambari-metrics-timelineservice/conf/unix/ambari-metrics-collector
>  25305cf 
>   
> ambari-server/src/main/resources/common-services/AMBARI_METRICS/0.1.0/package/scripts/ams_service.py
>  2b475dd 
> 
> Diff: https://reviews.apache.org/r/40723/diff/
> 
> 
> Testing
> -------
> 
> Manual testing on Kerberized and normal environment.
> 
> Python unit tests pass.
> 
> 
> Thanks,
> 
> Aravindan Vijayan
> 
>

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