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https://issues.apache.org/jira/browse/HBASE-20705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16525947#comment-16525947
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Sakthi commented on HBASE-20705:
--------------------------------
I have a question. If a table has only RPC quota set and then the table is
dropped off, does the quota still remain intact? Does it need to be removed
from the hbase:quota table? In short, is the below scenario valid:
{noformat}
hbase(main):023:0> create 't2','cf1'
Created table t2
Took 0.7405 seconds
=> Hbase::Table - t2
hbase(main):024:0>
hbase(main):025:0*
hbase(main):026:0* set_quota TYPE => THROTTLE, TABLE => 't2', LIMIT =>
'10M/sec'
Took 0.0082 seconds
hbase(main):027:0> list_quotas
OWNER QUOTAS
TABLE => t2 TYPE => THROTTLE, THROTTLE_TYPE => REQUEST_SIZE, LIMIT => 10M/sec,
SCOPE => MACHINE
1 row(s)
Took 0.0291 seconds
hbase(main):028:0> scan 'hbase:quota'
ROW COLUMN+CELL
t.t2 column=q:s, timestamp=1530165010888,
value=PBUF\x12\x0B\x12\x09\x08\x04\x10\x80\x80\x80\x05 \x02
1 row(s)
Took 0.0037 seconds
hbase(main):029:0> disable 't2'
Took 0.4328 seconds
hbase(main):030:0> drop 't2'
Took 0.2285 seconds
hbase(main):031:0> list_quotas
OWNER QUOTAS
TABLE => t2 TYPE => THROTTLE, THROTTLE_TYPE => REQUEST_SIZE, LIMIT => 10M/sec,
SCOPE => MACHINE
1 row(s)
Took 0.0230 seconds
hbase(main):032:0> scan 'hbase:quota'
ROW COLUMN+CELL
t.t2 column=q:s, timestamp=1530165010888,
value=PBUF\x12\x0B\x12\x09\x08\x04\x10\x80\x80\x80\x05 \x02
1 row(s)
Took 0.0038 seconds
{noformat}
> 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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