Alexey Serbin created KUDU-2023:
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Summary: Add tablet-specific version of
MetaCacheServerPicker::MarkServerFailed()
Key: KUDU-2023
URL: https://issues.apache.org/jira/browse/KUDU-2023
Project: Kudu
Issue Type: Improvement
Components: client
Affects Versions: 1.4.0
Reporter: Alexey Serbin
Assignee: Alexey Serbin
Current implementation of {{MetaCacheServerPicker::MarkServerFailed()}} makes
the whole tablet server with multiple tablets as failed in the metadata cache,
so future requests to any tablets hosted by the server would be directed to
some other tablet servers. There are some use-cases where having
tablet-grained version of the {{MetaCacheServerPicker::MarkServerFailed()}}
method would be beneficial. For example, marking only particular tablet failed
on a tablet server because of an error during {{KuduSession::Flush()}} could
avoid thrashing the whole metadata cache for the rest of tablets on the same
server if the server is overall healthy and robust.
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