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Posted to commits@pinot.apache.org by GitBox <gi...@apache.org> on 2021/09/10 16:14:15 UTC
[GitHub] [pinot] chenboat opened a new issue #7421: Heavy loaded server not serving queries after start
chenboat opened a new issue #7421:
URL: https://github.com/apache/pinot/issues/7421
For a server with a lot of segments for Upsert tables, the server start process may result in high GC activity and its zk client may be disconnected temporarily. In such case, the server may not register itself to serve query traffic because the following zk config writes fails -- note that the other server start process still works fine. So a solution here is to at least retry the config write instead of giving it up after one attempt.
https://github.com/apache/pinot/blob/7e9ca6a5a4afe0d4e283ac1307c45430e474cbf2/pinot-server/src/main/java/org/apache/pinot/server/starter/helix/BaseServerStarter.java#L468
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[GitHub] [pinot] mcvsubbu commented on issue #7421: Heavy loaded server not serving queries after start
Posted by GitBox <gi...@apache.org>.
mcvsubbu commented on issue #7421:
URL: https://github.com/apache/pinot/issues/7421#issuecomment-917113062
Pinot is horizontally scalable, and the way to solve this seems to be to increase the number of severs. Yes, retry may help in the short run, but you will need to re-scale soon I think.
Did we add live rebalance for upsert tables? If so, maybe that can migrate in zero downtime ?
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