| # |
| # |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| module Shell |
| module Commands |
| # Switch compaction for a region server |
| class CompactionSwitch < Command |
| def help |
| <<-EOF |
| Turn the compaction on or off on regionservers. Disabling compactions will also interrupt |
| any currently ongoing compactions. This state is ephemeral. The setting will be lost on |
| restart of the server. Compaction can also be enabled/disabled by modifying configuration |
| hbase.regionserver.compaction.enabled in hbase-site.xml. |
| Examples: |
| To enable compactions on all region servers |
| hbase> compaction_switch true |
| To disable compactions on all region servers |
| hbase> compaction_switch false |
| To enable compactions on specific region servers |
| hbase> compaction_switch true 'server2','server1' |
| To disable compactions on specific region servers |
| hbase> compaction_switch false 'server2','server1' |
| NOTE: A server name is its host, port plus startcode. For example: |
| host187.example.com,60020,1289493121758 |
| EOF |
| end |
| |
| def command(enable_disable, *server) |
| formatter.header(%w(['SERVER' 'PREV_STATE'])) |
| prev_state = admin.compaction_switch(enable_disable, server) |
| prev_state.each { |k, v| formatter.row([k.getServerName, java.lang.String.valueOf(v)]) } |
| formatter.footer(prev_state.size) |
| end |
| end |
| end |
| end |