Allow set/unset arbitrary table attributes from shell.
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Key: HBASE-4554
URL: https://issues.apache.org/jira/browse/HBASE-4554
Project: HBase
Issue Type: Improvement
Components: coprocessors
Reporter: Mingjie Lai
Assignee: Mingjie Lai
Fix For: 0.92.0
Table/region level coprocessor -- RegionObserver -- can be configured by
setting a HTD's attribute which matches Coprocessor$*.
Current shell -- alter -- cannot support to set/unset a table's arbitrary
attribute. We need it in order to configure region level coprocessors to a
table.
Proposed new shell:
{code}
hbase shell > alter 't1', METHOD => 'table_att', COPROCESSOR$1 =>
'hdfs://cp/foo.jar|org.apache.hadoop.hbase.sample|1|'
hbase shell > describe 't1'
{NAME => 't1', COPROCESSOR$1 =>
'hdfs://cp/foo.jar|org.apache.hadoop.hbase.sample|1|', MAX_FILESIZE =>
'134217728', ...}
hbase shell > alter 't1', METHOD => 'table_att_unset', COPROCESSOR$1
hbase shell > describe 't1'
{NAME => 't1', MAX_FILESIZE => '134217728', ...}
{code}
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