Zhihua Deng created HIVE-28662:
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Summary: Enable the dynamic leader election for HMS
Key: HIVE-28662
URL: https://issues.apache.org/jira/browse/HIVE-28662
Project: Hive
Issue Type: Improvement
Security Level: Public (Viewable by anyone)
Reporter: Zhihua Deng
Assignee: Zhihua Deng
In the Hive ACID world, we must enable the metastore.compactor.initiator.on and
metastore.compactor.cleaner.on on HMS to trigger the table compaction
automatically. In a real warehouse, we might have multiple HMS instances
behind, or even deploy for different purposes, running the tasks like these on
all these instances could be a waste of resources, make the HMS scale out not
so easily.
The HIVE-26509 introduces the dynamic leader election. Compared to the old one,
the administrator doesn't need to know the deployment beforehand, and a shared
properties can be used across all the HMS instances, simple yet effective.
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