Pankaj Kumar created HBASE-25078:
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Summary: QuotaRefresherChore doesn't update the User RPC Throttle
quota effectively
Key: HBASE-25078
URL: https://issues.apache.org/jira/browse/HBASE-25078
Project: HBase
Issue Type: Improvement
Components: Quotas
Reporter: Pankaj Kumar
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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