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https://issues.apache.org/jira/browse/HBASE-29573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Charles Connell updated HBASE-29573:
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Description:
I've found that HBASE-29479 will, in practice, increase load on the quota table
quite a bit. While it achieved its goal of quota correctness, this increase in
load is an unacceptable downside.
In response, I'd like to find a way for QuotaCache to always serve correct
quotas, and also keep load on the quota table low. There is a simple way to do
this, which is to simply scan the entire table into memory at startup, again
when quotas change, plus every refresh interval. This also simplifies the
QuotaCache.
was:
I've found that HBASE-29479 will, in practice, increase load on the quota table
quite a bit. While it achieved its goal of quota correctness, this increase in
load is an unacceptable downside.
In response, I'd like to find a way for QuotaCache to always serve correct
quotas, and also keep load on the quota table low. There is a simple way to do
this, which is to simply scan the entire table into memory at startup, again
when quotas change, plus every refresh interval.
> Fully load QuotaCache instead of reading individual rows on demand
> ------------------------------------------------------------------
>
> Key: HBASE-29573
> URL: https://issues.apache.org/jira/browse/HBASE-29573
> Project: HBase
> Issue Type: Improvement
> Reporter: Charles Connell
> Assignee: Charles Connell
> Priority: Minor
>
> I've found that HBASE-29479 will, in practice, increase load on the quota
> table quite a bit. While it achieved its goal of quota correctness, this
> increase in load is an unacceptable downside.
> In response, I'd like to find a way for QuotaCache to always serve correct
> quotas, and also keep load on the quota table low. There is a simple way to
> do this, which is to simply scan the entire table into memory at startup,
> again when quotas change, plus every refresh interval. This also simplifies
> the QuotaCache.
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