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https://issues.apache.org/jira/browse/HBASE-20885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16566937#comment-16566937
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Josh Elser commented on HBASE-20885:
------------------------------------
[~stack], [~Apache9], looking at bringing this back to your respective RM'ing
branches. Please advise if "no" (low risk, change limited to quotas, good
testing coverage here)
> Remove entry for RPC quota from hbase:quota when RPC quota is removed.
> ----------------------------------------------------------------------
>
> Key: HBASE-20885
> URL: https://issues.apache.org/jira/browse/HBASE-20885
> Project: HBase
> Issue Type: Sub-task
> Reporter: Sakthi
> Assignee: Sakthi
> Priority: Minor
> Attachments: hbase-20885.master.001.patch,
> hbase-20885.master.002.patch, hbase-20885.master.003.patch,
> hbase-20885.master.003.patch, hbase-20885.master.004.patch,
> hbase-20885.master.005.patch
>
>
> When a RPC quota is removed (using LIMIT => 'NONE'), the entry from
> hbase:quota table is not completely removed. For e.g. see below:
> {noformat}
> hbase(main):005:0> create 't2','cf1'
> Created table t2
> Took 0.8000 seconds
> => Hbase::Table - t2
> hbase(main):006:0> set_quota TYPE => THROTTLE, TABLE => 't2', LIMIT =>
> '10M/sec'
> Took 0.1024 seconds
> hbase(main):007:0> list_quotas
> OWNER QUOTAS
> TABLE => t2 TYPE => THROTTLE, THROTTLE_TYPE =>
> REQUEST_SIZE, LIMIT => 10M/sec, SCOPE => MACHINE
> 1 row(s)
> Took 0.0622 seconds
> hbase(main):008:0> scan 'hbase:quota'
> ROW COLUMN+CELL
> t.t2 column=q:s, timestamp=1531513014463,
> value=PBUF\x12\x0B\x12\x09\x08\x04\x10\x80\x80\x80
> \x05 \x02
> 1 row(s)
> Took 0.0453 seconds
> hbase(main):009:0> set_quota TYPE => THROTTLE, TABLE => 't2', LIMIT => 'NONE'
> Took 0.0097 seconds
> hbase(main):010:0> list_quotas
> OWNER QUOTAS
> 0 row(s)
> Took 0.0338 seconds
> hbase(main):011:0> scan 'hbase:quota'
> ROW COLUMN+CELL
> t.t2 column=q:s, timestamp=1531513039505,
> value=PBUF\x12\x00
> 1 row(s)
> Took 0.0066 seconds
> {noformat}
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