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https://issues.apache.org/jira/browse/HBASE-20705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16525967#comment-16525967
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Nihal Jain commented on HBASE-20705:
------------------------------------
bq. If a table has only RPC quota set and then the table is dropped off, does
the quota still remain intact?
In case of space quota (by default) this scenario is handled. This can be
disabled too. See
[https://hbase.apache.org/book.html#ops.space.quota.deletion|https://hbase.apache.org/book.html#ops.space.quota.deletion]
I think the behaviour should be same in case of rpc quota too. But from the
code, I see there's no handling for this scenario in case a rpc quota is set on
table. I am not sure whether it is designed to be like this. May be [~elserj]
can throw some more light on this.
> Having RPC Quota on a table prevents Space quota to be recreated/removed
> ------------------------------------------------------------------------
>
> Key: HBASE-20705
> URL: https://issues.apache.org/jira/browse/HBASE-20705
> Project: HBase
> Issue Type: Bug
> Reporter: Biju Nair
> Assignee: Sakthi
> Priority: Major
>
> * Property {{hbase.quota.remove.on.table.delete}} is set to {{true}} by
> default
> * Create a table and set RPC and Space quota
> {noformat}
> hbase(main):022:0> create 't2','cf1'
> Created table t2
> Took 0.7420 seconds
> => Hbase::Table - t2
> hbase(main):023:0> set_quota TYPE => SPACE, TABLE => 't2', LIMIT => '1G',
> POLICY => NO_WRITES
> Took 0.0105 seconds
> hbase(main):024:0> set_quota TYPE => THROTTLE, TABLE => 't2', LIMIT =>
> '10M/sec'
> Took 0.0186 seconds
> hbase(main):025:0> list_quotas
> TABLE => t2 TYPE => THROTTLE, THROTTLE_TYPE => REQUEST_SIZE, LIMIT =>
> 10M/sec, SCOPE => MACHINE
> TABLE => t2 TYPE => SPACE, TABLE => t2, LIMIT => 1073741824, VIOLATION_POLICY
> => NO_WRITES{noformat}
> * Drop the table and the Space quota is set to {{REMOVE => true}}
> {noformat}
> hbase(main):026:0> disable 't2'
> Took 0.4363 seconds
> hbase(main):027:0> drop 't2'
> Took 0.2344 seconds
> hbase(main):028:0> list_quotas
> TABLE => t2 TYPE => SPACE, TABLE => t2, REMOVE => true
> USER => u1 TYPE => THROTTLE, THROTTLE_TYPE => REQUEST_SIZE, LIMIT => 10M/sec,
> SCOPE => MACHINE{noformat}
> * Recreate the table and set Space quota back. The Space quota on the table
> is still set to {{REMOVE => true}}
> {noformat}
> hbase(main):029:0> create 't2','cf1'
> Created table t2
> Took 0.7348 seconds
> => Hbase::Table - t2
> hbase(main):031:0> set_quota TYPE => SPACE, TABLE => 't2', LIMIT => '1G',
> POLICY => NO_WRITES
> Took 0.0088 seconds
> hbase(main):032:0> list_quotas
> OWNER QUOTAS
> TABLE => t2 TYPE => THROTTLE, THROTTLE_TYPE => REQUEST_SIZE, LIMIT =>
> 10M/sec, SCOPE => MACHINE
> TABLE => t2 TYPE => SPACE, TABLE => t2, REMOVE => true{noformat}
> * Remove RPC quota and drop the table, the Space Quota is not removed
> {noformat}
> hbase(main):033:0> set_quota TYPE => THROTTLE, TABLE => 't2', LIMIT => NONE
> Took 0.0193 seconds
> hbase(main):036:0> disable 't2'
> Took 0.4305 seconds
> hbase(main):037:0> drop 't2'
> Took 0.2353 seconds
> hbase(main):038:0> list_quotas
> OWNER QUOTAS
> TABLE => t2 TYPE => SPACE, TABLE => t2, REMOVE
> => true{noformat}
> * Deleting the quota entry from {{hbase:quota}} seems to be the option to
> reset it.
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