[jira] [Created] (YARN-5577) [Atsv2] Publish parent/child entities value as string rather than value as object.

["Rohith Sharma K S (JIRA)" <ji...@apache.org>]

Rohith Sharma K S created YARN-5577:
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             Summary: [Atsv2] Publish parent/child entities value as string rather than value as object.
                 Key: YARN-5577
                 URL: https://issues.apache.org/jira/browse/YARN-5577
             Project: Hadoop YARN
          Issue Type: Bug
          Components: timelinereader, timelineserver
            Reporter: Rohith Sharma K S
            Assignee: Rohith Sharma K S


In HierarchicalTimelineEntity, setparent/addChild allows to set parent/child entities at INFO level. The key is an string and value as an object. 
Like below, for YARN_CONTAINER entity parent entity set for application.
{code}
"SYSTEM_INFO_PARENT_ENTITY": {
       "type": "YARN_APPLICATION",
       "id": "application_1471931266232_0024"
     }
{code}

But to use infofilter on entity type YARN_CONTAINER for an specific applicationId, IIUC there is no way to pass object as value in infofilter. 

To make easier retrieval either
# publish parent/child entity id and type as string rather that object like below
{code}
"SYSTEM_INFO_PARENT_ENTITY_TYPE": "YARN_APPLICATION"
"SYSTEM_INFO_PARENT_ENTITY_ID":"application_1471931266232_0024"
{code}
OR
# Add ability to provide object as filter with below format like {{infofilters=SYSTEM_INFO_PARENT_ENTITY eq ((type eq YARN_APPLICATION) AND (id eq application_1471931266232_0024))}}

I believe 2nd approach will be well applicable for any entities. But I am not sure does HBase supports such a custom filters while scanning a table. 

1st approaches will be much easier to change. 



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