diff options
Diffstat (limited to 'TWA-PIC/hbase/bin/get-active-master.rb')
| -rw-r--r-- | TWA-PIC/hbase/bin/get-active-master.rb | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/TWA-PIC/hbase/bin/get-active-master.rb b/TWA-PIC/hbase/bin/get-active-master.rb new file mode 100644 index 0000000..d8c96fe --- /dev/null +++ b/TWA-PIC/hbase/bin/get-active-master.rb @@ -0,0 +1,38 @@ +#!/usr/bin/env hbase-jruby +# +# 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. + +# Prints the hostname of the machine running the active master. + +include Java +java_import org.apache.hadoop.hbase.HBaseConfiguration +java_import org.apache.hadoop.hbase.ServerName +java_import org.apache.hadoop.hbase.zookeeper.ZKWatcher +java_import org.apache.hadoop.hbase.zookeeper.MasterAddressTracker + +# disable debug/info logging on this script for clarity +log_level = org.apache.log4j.Level::ERROR +org.apache.log4j.Logger.getLogger('org.apache.hadoop.hbase').setLevel(log_level) +org.apache.log4j.Logger.getLogger('org.apache.zookeeper').setLevel(log_level) + +config = HBaseConfiguration.create + +zk = ZKWatcher.new(config, 'get-active-master', nil) +begin + puts MasterAddressTracker.getMasterAddress(zk).getHostname +ensure + zk.close +end |