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https://issues.apache.org/jira/browse/HBASE-25078?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pankaj Kumar updated HBASE-25078:
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Summary: QuotaRefresherChore doesn't update QuotaCache for user effectively
(was: QuotaRefresherChore doesn't update the User RPC Throttle quota
effectively)
> QuotaRefresherChore doesn't update QuotaCache for user effectively
> ------------------------------------------------------------------
>
> Key: HBASE-25078
> URL: https://issues.apache.org/jira/browse/HBASE-25078
> Project: HBase
> Issue Type: Improvement
> Components: Quotas
> Reporter: Pankaj Kumar
> Assignee: Pankaj Kumar
> Priority: Minor
>
> Currently RegionServer record a user on their first RPC and trigger the
> QuotaCache refresh,
>
> https://github.com/apache/hbase/blob/8a6299bb387aaedcdab05224a462e63cd121fbb0/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/QuotaCache.java#L136
> And QuotaRefresherChore refresh quota periodically for those users who are
> recorded by RegionServer on their first RPC,
> https://github.com/apache/hbase/blob/8a6299bb387aaedcdab05224a462e63cd121fbb0/hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/QuotaCache.java#L284
>
> So even though user quota is set but it will be updated when user send RPC.
> Here each user will get 1 extra RPC in each RegionServer life and same will
> continue when got restarted.
>
> We can enhance this by doing narrow scan on quota table to get the user
> specific quota
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