Vinay:
>From hbase-common/src/main/resources/hbase-default.xml off of trunk:
<description>The mode the cluster will be in. Possible values are
false for standalone mode and true for distributed mode. If
false, startup will run all HBase and ZooKeeper daemons together
in the one JVM.</description>
Hope the above clarifies.
On Thu, Aug 15, 2013 at 6:32 AM, Jean-Marc Spaggiari <
[email protected]> wrote:
> Hi Vinay,
>
> I'm not 100% sure but I think the key is ZooKeeper...
>
> <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>
>
> On my side, I have an external ZK, so I have put this as true even if I'm
> pseudo-distributed since I want to handle ZK myself. But if you want a
> Pseudo-Distributed mode and you want to let HBase manage ZK, then you need
> to put it at false.
>
> If you put it at true, then you have to specify the qorum property too.
>
> My understanding.
>
> JM
>
> 2013/8/15 Vinay Mehta <[email protected]>
>
> > Hi Ted/Jean
> > Can you help in understanding conflicting statements in official
> reference
> > guide as i mentioned above ?
> >
> >
> > On Thu, Aug 15, 2013 at 6:51 PM, Ted Yu <[email protected]> wrote:
> >
> > > Vinay:
> > > In http://hbase.apache.org/book.html , take a look at 14.3.1.2.
> > Hardware
> > >
> > >
> > > On Thu, Aug 15, 2013 at 4:47 AM, Jean-Marc Spaggiari <
> > > [email protected]> wrote:
> > >
> > > > If you want want to run the application but no MR jobs, small CPU is
> > > > enought. If you want to inject big load and run big jobs, will
> require
> > > big
> > > > CPU...
> > > >
> > > > JM
> > > >
> > > > 2013/8/15 Vinay Mehta <[email protected]>
> > > >
> > > > > Hi,
> > > > > Thanks Jean.
> > > > > I will take care of your advice in future.
> > > > > What about CPU configuration ?
> > > > >
> > > > >
> > > > > On Thu, Aug 15, 2013 at 4:51 PM, Jean-Marc Spaggiari <
> > > > > [email protected]> wrote:
> > > > >
> > > > > > Hi Vinay,
> > > > > >
> > > > > > 2 things.
> > > > > >
> > > > > > First, you should not expect the list to be available 24/7 to
> reply
> > > to
> > > > > your
> > > > > > questions in less that 2 hours. People here are all voloneers
> from
> > > the
> > > > > > community, and something, they mightnot have the time, or might
> be
> > > > > > sleeping, or might not know, or anything else.
> > > > > >
> > > > > > Second, here is what you need to setup for a pseudo-distributed
> > node.
> > > > > don't
> > > > > > forget that you need at least 16GB on this node if you want it to
> > > work
> > > > > > correctly.
> > > > > >
> > > > > > <configuration>
> > > > > > <property>
> > > > > > <name>hbase.rootdir</name>
> > > > > > <value>hdfs://hbasetest:9000/hbase</value>
> > > > > > </property>
> > > > > > <property>
> > > > > > <name>hbase.cluster.distributed</name>
> > > > > > <value>true</value>
> > > > > > </property>
> > > > > > <property>
> > > > > > <name>hbase.zookeeper.quorum</name>
> > > > > > <value>hbasetest</value>
> > > > > > </property>
> > > > > > </configuration>
> > > > > >
> > > > > > In this mode, I start Hadoop and ZooKeeper manually.
> > > > > >
> > > > > > JM
> > > > > >
> > > > > > 2013/8/15 Vinay Mehta <[email protected]>
> > > > > >
> > > > > > > Some one please reply.
> > > > > > > I am asking this as at one place in official reference guide
> its
> > > > > > mentioned
> > > > > > > as true as show below :-
> > > > > > >
> > > > > > > 2.2.2.1.1. Pseudo-distributed Configuration File
> > > > > > >
> > > > > > > Below is a sample pseudo-distributed file for the node
> > > > > > h-24-30.example.com
> > > > > > > .
> > > > > > > hbase-site.xml
> > > > > > >
> > > > > > > <configuration>
> > > > > > > ...* <property>
> > > > > > > <name>hbase.rootdir</name>
> > > > > > > <value>hdfs://h-24-30.sfo.stumble.net:8020/hbase</value>
> > > > > > > </property>
> > > > > > > <property>
> > > > > > > <name>hbase.cluster.distributed</name>
> > > > > > > <value>true</value> </property>*
> > > > > > >
> > > > > > >
> > > > > > > Where as at another place in same file its mentioned as
> > > > > > >
> > > > > > > 2.4.1.1. hbase-site.xml
> > > > > > >
> > > > > > > <?xml version="1.0"?>
> > > > > > > <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
> > > > > > > <configuration>
> > > > > > > .....
> > > > > > > * <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>*
> > > > > > > </configuration>
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > So its contradictory and hence i am confused. :(
> > > > > > > Also As i have single machine which will hosts all daemons of
> > > hadoop
> > > > > and
> > > > > > > hbase what should be the ideal cpu and memory configuration ?
> > > > > > >
> > > > > > > Regards,
> > > > > > > Vinay
> > > > > > >
> > > > > > > On Thu, Aug 15, 2013 at 12:45 PM, Vinay Mehta <
> > > > [email protected]
> > > > > > > >wrote:
> > > > > > >
> > > > > > > > Hi,
> > > > > > > > I am newbie to Hbase and Hadoop.
> > > > > > > > I am trying to configure Hbase and Hadoop in pseudo
> distributed
> > > > mode.
> > > > > > > > I have few questions.
> > > > > > > >
> > > > > > > > 1) what should hbase.cluster.distributed be set to in
> > > > hbase-site.xml
> > > > > > for
> > > > > > > > pseudo distributed mode.
> > > > > > > > Is it false for stanalone mode and true for both pseudo
> > > distributed
> > > > > and
> > > > > > > > fully distributed mode ?
> > > > > > > >
> > > > > > > > 2) As i have single machine which will hosts all daemons of
> > > hadoop
> > > > > and
> > > > > > > > hbase what should be the ideal cpu and memory configuration ?
> > > > > > > >
> > > > > > > > Thanks for your time.
> > > > > > > >
> > > > > > > > Regards,
> > > > > > > > Vinay
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
