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From "Nate Cole (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-2158) Certain queries with metrics takes a long time (3 minutes on a 450-node cluster)
Date Fri, 17 May 2013 18:25:18 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-2158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13660934#comment-13660934
] 

Nate Cole commented on AMBARI-2158:
-----------------------------------

+1.  Just one thought:  we may not want to fail the entire request if one of the Future's
fails.  If it's only one out of 500 we may want to somehow show that some other way but still
return the results of the other 499?
                
> Certain queries with metrics takes a long time (3 minutes on a 450-node cluster)
> --------------------------------------------------------------------------------
>
>                 Key: AMBARI-2158
>                 URL: https://issues.apache.org/jira/browse/AMBARI-2158
>             Project: Ambari
>          Issue Type: Bug
>            Reporter: Tom Beerbower
>            Assignee: Tom Beerbower
>         Attachments: AMBARI-2158.patch
>
>
> On a 450-node cluster, the following query takes 3 minutes to respond:
> * /services?fields=components/ServiceComponentInfo,components/host_components,components/host_components/HostRoles,components/host_components/metrics/jvm/memHeapUsedM,components/host_components/metrics/jvm/memHeapCommittedM,components/host_components/metrics/mapred/jobtracker/trackers_decommissioned
> The following query (only one metric) took 2.7 minutes:
> * /services?fields=components/ServiceComponentInfo,components/host_components,components/host_components/HostRoles,components/host_components/metrics/jvm/memHeapUsedM
> Note that the same query without the metrics only takes about 4 seconds:
> * /services?fields=components/ServiceComponentInfo,components/host_components,components/host_components/HostRoles

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