[jira] [Created] (YARN-4786) Enhance hbase coprocessor aggregation operations:GLOBAL_MIN, LATEST_MIN etc and FINAL attributes

["Vrushali C (JIRA)" <ji...@apache.org>]

Vrushali C created YARN-4786:
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             Summary: Enhance hbase coprocessor aggregation operations:GLOBAL_MIN, LATEST_MIN etc and FINAL attributes
                 Key: YARN-4786
                 URL: https://issues.apache.org/jira/browse/YARN-4786
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Vrushali C



As part of YARN-4062, Joep and I had been discussing about min, max operations and the final attributes. 

YARN-4062 has GLOBAL_MIN, GLOBAL_MAX and SUM operations. It presently indicates SUM_FINAL for a cell that contains a metric that is the final value for the metric.

We should enhance this such that the set of aggregation dimensions SUM, MIN, MAX, etc. are really set of a per-column level and shouldn't be passed from the client, but be instrumented by the ColumnHelper infrastructure instead. We should probably use a different tag value for that.

Both aggregation dimension and this "FINAL_VALUE" or whatever abbreviation we use are needed to determine the right thing to do for compaction. Only one value needs to have this final value bit / tag set.





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