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From "Shashikant Banerjee (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDDS-676) Enable Read from open Containers via Standalone Protocol
Date Wed, 17 Oct 2018 07:00:03 GMT
Shashikant Banerjee created HDDS-676:
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             Summary: Enable Read from open Containers via Standalone Protocol
                 Key: HDDS-676
                 URL: https://issues.apache.org/jira/browse/HDDS-676
             Project: Hadoop Distributed Data Store
          Issue Type: Bug
            Reporter: Shashikant Banerjee
            Assignee: Shashikant Banerjee


With BlockCommitSequenceId getting updated per block commit on open containers in OM as well
datanode, Ozone Client reads can through Standalone protocol not necessarily requiring Ratis.
Client should verify the BCSID of the container which has the data block , which should always
be greater than or equal to the BCSID of the block to be read and the existing block BCSID
should exactly match that of the block to be read. As a part of this, Client can try to read
from a replica with a supplied BCSID and failover to the next one in case the block does ont
exist on one replica.



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