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Posted to issues@kudu.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2018/03/15 00:37:00 UTC
[jira] [Created] (KUDU-2348) Java client doesn't pick a random
replica when no replica is local
Todd Lipcon created KUDU-2348:
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Summary: Java client doesn't pick a random replica when no replica is local
Key: KUDU-2348
URL: https://issues.apache.org/jira/browse/KUDU-2348
Project: Kudu
Issue Type: Improvement
Components: client, java
Affects Versions: 1.7.0
Reporter: Todd Lipcon
In RemoteTablet we have this comment:
{code}
* Get the information on the closest server. If none is closer than the others,
* return the information on a randomly picked server.
{code}
However it appears that the "random" replica is deterministic - it's always the last replica in hashmap iteration order, which is likely to be the same order across all clients in the cluster. That would cause load to be concentrated on one replica rather than spread even if the clients are meaning to spread the load.
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