Starting 0.96.0?

[Jean-Marc Spaggiari <je...@spaggiari.org>]

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

Re: Starting 0.96.0?

[Ted Yu <yu...@gmail.com>]

bin/zookeepers.sh is called for zookeeper where there is the following
check:

if [ "$HBASE_MANAGES_ZK" = "true" ]; then

When zookeeper isn't managed by HBase, zookeeper server won't be started.


On Sat, Nov 9, 2013 at 2:56 PM, Jean-Marc Spaggiari <jean-marc@spaggiari.org
> wrote:

> 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
>