Hanisha Koneru created HDDS-1175:
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Summary: Serve read requests directly from RocksDB
Key: HDDS-1175
URL: https://issues.apache.org/jira/browse/HDDS-1175
Project: Hadoop Distributed Data Store
Issue Type: Sub-task
Reporter: Hanisha Koneru
Assignee: Hanisha Koneru
We can directly server read requests from the OM's RocksDB instead of going
through the Ratis server. OM should first check its role and only if it is the
leader can it server read requests.
There can be a scenario where an OM can lose its Leader status but not know
about the new election in the ring. This OM could server stale reads for the
duration of the heartbeat timeout but this should be acceptable (similar to how
Standby Namenode could possibly server stale reads till it figures out the new
status).
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