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From: Jean-Marc Spaggiari <jean-marc@spaggiari.org>
Date: Sat, 9 Nov 2013 17:56:02 -0500
Message-ID: 
 <CAPQV63VodvkbWSsoy7Lvqv5s1+T63yVZXzgfhHEZiKy-K45_8w@mail.gmail.com>
Subject: Starting 0.96.0?
To: user <user@hbase.apache.org>
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--089e0111ae3476bb5d04eac66827
Content-Type: text/plain; charset=UTF-8

Hi,

when we start 0.96 using bin/start-hbase.sh the following code is executed

distMode=`$bin/hbase --config "$HBASE_CONF_DIR"
org.apache.hadoop.hbase.util.HBaseConfTool hbase.cluster.distributed | head
-n 1`


if [ "$distMode" == 'false' ]
then
  "$bin"/hbase-daemon.sh $commandToRun master $@
else
  "$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" $commandToRun
zookeeper
  "$bin"/hbase-daemon.sh --config "${HBASE_CONF_DIR}" $commandToRun master
  "$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \
    --hosts "${HBASE_REGIONSERVERS}" $commandToRun regionserver
  "$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \
    --hosts "${HBASE_BACKUP_MASTERS}" $commandToRun master-backup
fi


Why are we always starting the zookeeper server? It should not be started
if this property is set, right?

  <property>
    <name>hbase.cluster.distributed</name>
    <value>true</value>
    <description>The mode the cluster will be in. Possible values are
      false: standalone and pseudo-distributed setups with managed Zookeeper
      true: fully-distributed with unmanaged Zookeeper Quorum (see
hbase-env.sh)
    </description>
  </property>


I have commented it for my needs, but I'm wondering if it's normal or not
to have it.

I have a ZK server external to HBase.

JM

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