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