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From "Tao Yang (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (YARN-9578) Add limit/actions/summarize options for app activities REST API
Date Mon, 03 Jun 2019 12:50:01 GMT

    [ https://issues.apache.org/jira/browse/YARN-9578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16854553#comment-16854553
] 

Tao Yang edited comment on YARN-9578 at 6/3/19 12:49 PM:
---------------------------------------------------------

For better serving to users, we should support more options for app activities REST API:
 # limit - set a limit of the result, user often need only 1 or a few latest activities,
this option can lower the cost from both server and client sides in some scenarios.
 # actions - the required actions of app activities including UPDATE and GET, some scenarios
such as app attempt UI would like to refresh and show the latest activities, perhaps will trigger
updating at first then get latest activities after a while, customized actions can drop
unnecessary actions to cut the cost.
 # summarize - whether app activities in multiple scheduling processes need to be summarized,
it's useful when multi-node disabled since only one node can be considered in a single scheduling
process, enable this may give us a summary with diagnostics on all nodes for better debugging.


was (Author: tao yang):
For better serving to users, we should support more options for app activities REST API:
 # limit - set a limit of the result, user often need only 1 or a few latest activities,
this option can lower the cost from both server and client sides in some scenarios.
 # actions - the required actions of app activities including UPDATE and GET, some scenarios
such as app attempt UI would like to refresh and show the latest activities, perhaps will trigger
updating at first then get latest activities after a while, customized actions can drop
unnecessary actions to cut the cost.
 # summarize - whether app activities in multiple scheduling processes need to be summarized,
it's useful when multi-node disabled since only one node can be considered in a single scheduling
process. 

> Add limit/actions/summarize options for app activities REST API
> ---------------------------------------------------------------
>
>                 Key: YARN-9578
>                 URL: https://issues.apache.org/jira/browse/YARN-9578
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler
>            Reporter: Tao Yang
>            Assignee: Tao Yang
>            Priority: Major
>         Attachments: YARN-9578.001.patch, YARN-9578.002.patch, YARN-9578.003.patch
>
>
> Currently all completed activities of specified application in cache will be returned
for application activities REST API. Most results may be redundant in some scenarios which
only need a few latest results, for example, perhaps only one result is needed to be shown
on UI for debugging.



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