Peter Vary created HIVE-21847:
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Summary: Reduce the communication rate between TezAM and
LlapDaemons for Llap statistics
Key: HIVE-21847
URL: https://issues.apache.org/jira/browse/HIVE-21847
Project: Hive
Issue Type: Sub-task
Reporter: Peter Vary
HIVE-21846 is suboptimal if we have big number of TezAMs and LlapDaemons.
We have to find a better way which is scaleable.
Possible solution could be:
* Elect a TezAM leader for statistics fetching using ZooKeeper for the election
* TezAM should become a leader and fetch LlapDaemon data from the Daemons if
there is no existing leader
* TezAM should query the data from the leader TezAM if there is an existing
leader.
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