Vrushali C created YARN-4786:
--------------------------------
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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
