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https://issues.apache.org/jira/browse/HBASE-12433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14214314#comment-14214314
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Li Jiajia commented on HBASE-12433:
-----------------------------------
hi, [~jamestaylor], I use your command to modify the priority of an existing
coprocessor, but after this command, a new coprocessor added, it that right
used?
hbase(main):001:0> create 't6','f1'
hbase(main):002:0> describe 't6'
DESCRIPTION
ENABLED
't6', {NAME => 'f1', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW',
REPLICATION_SCOPE => '0', VERSIONS => '1', COMPRESSION => 'NO true
NE', MIN_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'false',
BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 't
rue'}
hbase(main):001:0> alter 't6', METHOD =>
'table_att','coprocessor'=>'|org.apache.hadoop.hbase.client.coprocessor.TestCoprocessor2|1001|'
2014-11-17 14:01:37,170 WARN [main] util.NativeCodeLoader: Unable to load
native-hadoop library for your platform... using builtin-java classes where
applicable
Updating all regions with the new schema...
0/1 regions updated.
1/1 regions updated.
Done.
0 row(s) in 3.0290 seconds
hbase(main):002:0> describe 't6'
DESCRIPTION
ENABLED
't6', {TABLE_ATTRIBUTES => {coprocessor$1 =>
'|org.apache.hadoop.hbase.client.coprocessor.TestCoprocessor2|1001|'}, {NAME =>
'f1', DATA true
_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPLICATION_SCOPE => '0',
VERSIONS => '1', COMPRESSION => 'NONE', MIN_VERSIONS => '0',
TTL => 'FOREVER', KEEP_DELETED_CELLS => 'false', BLOCKSIZE => '65536',
IN_MEMORY => 'false', BLOCKCACHE => 'true'}
1 row(s) in 0.0290 seconds
hbase(main):003:0> alter 't6', METHOD =>
'table_att','coprocessor$1'=>'|org.apache.hadoop.hbase.client.coprocessor.TestCoprocessor2|1002|'
Updating all regions with the new schema...
0/1 regions updated.
1/1 regions updated.
Done.
0 row(s) in 2.1110 seconds
hbase(main):004:0> describe 't6'
DESCRIPTION
ENABLED
't6', {TABLE_ATTRIBUTES => {coprocessor$1 =>
'|org.apache.hadoop.hbase.client.coprocessor.TestCoprocessor2|1001|',
coprocessor$1$2 => ' true
|org.apache.hadoop.hbase.client.coprocessor.TestCoprocessor2|1002|'}, {NAME =>
'f1', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW
', REPLICATION_SCOPE => '0', VERSIONS => '1', COMPRESSION => 'NONE',
MIN_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'fals
e', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'}
1 row(s) in 0.0240 seconds
> Coprocessors not dynamically reordered when reset priority
> ----------------------------------------------------------
>
> Key: HBASE-12433
> URL: https://issues.apache.org/jira/browse/HBASE-12433
> Project: HBase
> Issue Type: Bug
> Components: Coprocessors
> Affects Versions: 0.98.7
> Reporter: James Taylor
>
> When modifying the coprocessor priority through the HBase shell, the order of
> the firing of the coprocessors wasn't changing. It probably would have with a
> cluster bounce, but if we can make it dynamic easily, that would be
> preferable.
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