Details
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Sub-task
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Status: Open
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Major
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Resolution: Unresolved
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HDFS-7240
Description
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.