Anu Engineer created HDFS-11443:
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Summary: Ozone: Support SCM multiple instance for HA
Key: HDFS-11443
URL: https://issues.apache.org/jira/browse/HDFS-11443
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ozone
Affects Versions: HDFS-7240
Reporter: Anu Engineer
Assignee: Anu Engineer
Fix For: HDFS-7240
SCM clients are capable of talking to multiple SCMs. This is achieved by
reading the SCM config information or by one of the active SCM sending out the
current set of machines that make up the RAFT Quorum.
Currently we are not sending out the list of SCM machines dynamically, that is
clients read the SCM info only from the config files. This hurts cluster level
HA since if a node fails in the SCM RAFT ring, the operator should be able to
add a new node for high availability without having to do anything else.
This JIRA is to track that membership change send updates to all datanodes, so
they all start talking to the newly added SCM node automatically.
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