Mike Percy created KUDU-2246:
--------------------------------
Summary: Make "kudu tablet change_config move_replica" more
reliable
Key: KUDU-2246
URL: https://issues.apache.org/jira/browse/KUDU-2246
Project: Kudu
Issue Type: Improvement
Components: consensus, ops-tooling
Reporter: Mike Percy
As part of KUDU-1097 we changed the replica move tool to use the new 3-4-3
re-replication scheme when it's enabled. In certain edge-case scenarios, such
as when there is a replica failure in the middle of a move operation, the
reliability of the tool may be reduced, and the node slated for removal may not
be removed. This is especially true if the user hits ctrl+c and kills the tool
before the movement process is complete in the context of a simultaneous
failure.
We can improve this by implementing leadership transfer (KUDU-2245) and having
a leader gracefully step down when there is a suitable replacement and the
leader is marked with the "replace=true" attribute in the Raft config.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
