Todd Lipcon created KUDU-2711:
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Summary: Improve performance of GetTableLocations for large tables
Key: KUDU-2711
URL: https://issues.apache.org/jira/browse/KUDU-2711
Project: Kudu
Issue Type: Improvement
Components: master, perf
Affects Versions: 1.9.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Currently the response for TableLocations returns a separate copy of the
TSInfoPB for every replica. These PBs are relatively large and include string
UUIDs, hostnames, etc. For large tables, a response may have up to 3000
replicas. In most clusters, the table itself will be on far fewer than 3000
unique hosts, so it makes sense to return the replicas as indexes into a
response-level list rather than separately duplicate the TS info in each of the
replica PBs.
Additionally, we can consider a reader-writer lock on TSDescriptor so that
these requests can proceed more in parallel.
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