Srimanth Gunturi created AMBARI-3086:
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Summary: Services API call with metrics takes 30% longer with all
services started
Key: AMBARI-3086
URL: https://issues.apache.org/jira/browse/AMBARI-3086
Project: Ambari
Issue Type: Task
Components: controller
Affects Versions: 1.4.0
Reporter: Srimanth Gunturi
I stopped all the services and started invoking the /services endpoint. While
that was looping, I invoked the 'Start all services' call. The time being taken
by the same call increased now by over 30%.
The exact /services call made was
{noformat}
/api/v1/clusters/${cluster}/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,components/host_components/metrics/cpu/cpu_wio,components/host_components/metrics/rpc/RpcQueueTime_avg_time,components/host_components/metrics/flume/flume,components/host_components/metrics/yarn/Queue
{noformat}
Time measurements in milliseconds:
{noformat}
/services All Stopped All Started
Total Time 2100.704545 2926.313725
Latency Time 2048.295455 2838.764706
Transfer Time 52.40909091 87.54901961
Data size (bytes) 825555 1371548
{noformat}
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