Lantao Jin created YARN-6280:
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Summary: Add a query parameter in ResourceManager Cluster
Applications REST API to control whether or not returns ResourceRequest
Key: YARN-6280
URL: https://issues.apache.org/jira/browse/YARN-6280
Project: Hadoop YARN
Issue Type: Improvement
Reporter: Lantao Jin
Begin from v2.7, the ResourceManager Cluster Applications REST API returns
ResourceRequest list. It's a very large construction in AppInfo.
As a test, we use below URI to query only 2 results:
http://<rm http address:port>/ws/v1/cluster/apps?states=running,accepted&limit=2
The results are very different:
||Hadoop version|Total Character|Total Word|Total Lines|Size||
|2.4.1|1192| 42| 42| 1.2 KB|
|2.7.1|1222179| 48740| 48735| 1.21 MB|
Most RESTful API requesters don't know about this after upgraded and their old
queries may cause ResourceManager more GC consuming and slower. Even if they
know this but have no idea to reduce the impact of ResourceManager except slow
down their query frequency.
The patch adding a query parameter "showResourceRequests" to help requesters
who don't need this information to reduce the overhead. In consideration of
compatibility of interface, the default value is true if they don't set the
parameter, so the behaviour is the same as now.
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