Joep Rottinghuis commented on YARN-4062:

In FlowRunCoprocessor#getCellTimestamp is it possible to reference the KeyValue 
object directly and use KeyValue#isLatestTimestamp, or is that challenging due 
to put.getFamilyCellMap returning an Object implementing the Cell interface, 
but not the KeyValue itself?

> Add the flush and compaction functionality via coprocessors and scanners for 
> flow run table
> -------------------------------------------------------------------------------------------
>                 Key: YARN-4062
>                 URL: https://issues.apache.org/jira/browse/YARN-4062
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Vrushali C
>            Assignee: Vrushali C
> As part of YARN-3901, coprocessor and scanner is being added for storing into 
> the flow_run table. It also needs a flush & compaction processing in the 
> coprocessor and perhaps a new scanner to deal with the data during flushing 
> and compaction stages. 

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