You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@hbase.apache.org by Tianying Chang <ti...@ebaysf.com> on 2013/10/10 19:46:56 UTC
Hbase 95 on Hadoop 2. No master znode created in zookeeper
Hi,
I found that there is no master znode under /hbase in zookeeper. Actually, the /hbase directory is not even created after just start the master (Based on Log and webUI, the master is up fine). After I bring up a RS, the /hbase directory and some other znode like /hbase/backup-masters, /hbase/online-snapshot, ... and created, but still no /hbase/master.
Anyone has any idea why? Without /hbase/master znode, RS/client won't be able to find the master.
Thanks
Tian-Ying
RE: Hbase 95 on Hadoop 2. No master znode created in zookeeper
Posted by Tianying Chang <ti...@ebaysf.com>.
Thanks for the information. We will get 96 installed instead.
Thanks
Tian-Ying
-----Original Message-----
From: saint.ack@gmail.com [mailto:saint.ack@gmail.com] On Behalf Of Stack
Sent: Thursday, October 10, 2013 11:09 AM
To: Hbase-User
Subject: Re: Hbase 95 on Hadoop 2. No master znode created in zookeeper
On Thu, Oct 10, 2013 at 10:59 AM, Tianying Chang <ti...@ebaysf.com> wrote:
> Not really. Because we are deploying hadoop2+hbase95 in our production
> cluster. Need to confirm 95 is working fine.
>
>
Every announcement related to the 0.95.x series came with this disclaimer:
"Be aware that development series releases are barely-tested product and come with no guarantees. We make no promises that the next release in this series will be compatible with this one nor even that you will be able to preserve data across the update (This is at an extreme, and highly unlikely, but could be the case). No work has been done to make it so you can migrate from 0.94.x HBase. Development series releases are not for production"
For example, see http://search-hadoop.com/m/m2xzau6JWS1 or see the section in the reference guide on odd-numbered development releases: on http://hbase.apache.org/book.html#hbase.versioning
Did you miss the above messaging? How can we help get you on to a 0.96.0RC at least?
Thanks,
St.Ack
Re: Hbase 95 on Hadoop 2. No master znode created in zookeeper
Posted by Stack <st...@duboce.net>.
On Thu, Oct 10, 2013 at 10:59 AM, Tianying Chang <ti...@ebaysf.com> wrote:
> Not really. Because we are deploying hadoop2+hbase95 in our production
> cluster. Need to confirm 95 is working fine.
>
>
Every announcement related to the 0.95.x series came with this disclaimer:
"Be aware that development series releases are barely-tested product and
come
with no guarantees. We make no promises that the next release in this
series will be compatible with this one nor even that you will be able to
preserve data across the update (This is at an extreme, and highly unlikely,
but could be the case). No work has been done to make it so you can migrate
from 0.94.x HBase. Development series releases are not for production"
For example, see http://search-hadoop.com/m/m2xzau6JWS1 or see the section
in the reference guide on odd-numbered development releases: on
http://hbase.apache.org/book.html#hbase.versioning
Did you miss the above messaging? How can we help get you on to a 0.96.0RC
at least?
Thanks,
St.Ack
RE: Hbase 95 on Hadoop 2. No master znode created in zookeeper
Posted by Tianying Chang <ti...@ebaysf.com>.
Not really. Because we are deploying hadoop2+hbase95 in our production cluster. Need to confirm 95 is working fine.
-----Original Message-----
From: Ted Yu [mailto:yuzhihong@gmail.com]
Sent: Thursday, October 10, 2013 10:52 AM
To: user@hbase.apache.org
Subject: Re: Hbase 95 on Hadoop 2. No master znode created in zookeeper
Can you try newer release such as 0.96.0 RC4 ?
Here is what I got from 'hbase zkcli' using 0.96.0 cluster :
] ls /hbase
[meta-region-server, backup-masters, table, draining, region-in-transition, table-lock, running, master, namespace, hbaseid, online-snapshot, replication, splitWAL, recovering-regions, rs]
Cheers
On Thu, Oct 10, 2013 at 10:46 AM, Tianying Chang <ti...@ebaysf.com> wrote:
> Hi,
>
> I found that there is no master znode under /hbase in zookeeper.
> Actually, the /hbase directory is not even created after just start
> the master (Based on Log and webUI, the master is up fine). After I
> bring up a RS, the /hbase directory and some other znode like
> /hbase/backup-masters, /hbase/online-snapshot, ... and created, but still no /hbase/master.
>
>
> Anyone has any idea why? Without /hbase/master znode, RS/client won't
> be able to find the master.
>
> Thanks
> Tian-Ying
>
Re: Hbase 95 on Hadoop 2. No master znode created in zookeeper
Posted by Ted Yu <yu...@gmail.com>.
Can you try newer release such as 0.96.0 RC4 ?
Here is what I got from 'hbase zkcli' using 0.96.0 cluster :
] ls /hbase
[meta-region-server, backup-masters, table, draining, region-in-transition,
table-lock, running, master, namespace, hbaseid, online-snapshot,
replication, splitWAL, recovering-regions, rs]
Cheers
On Thu, Oct 10, 2013 at 10:46 AM, Tianying Chang <ti...@ebaysf.com> wrote:
> Hi,
>
> I found that there is no master znode under /hbase in zookeeper. Actually,
> the /hbase directory is not even created after just start the master (Based
> on Log and webUI, the master is up fine). After I bring up a RS, the /hbase
> directory and some other znode like /hbase/backup-masters,
> /hbase/online-snapshot, ... and created, but still no /hbase/master.
>
>
> Anyone has any idea why? Without /hbase/master znode, RS/client won't be
> able to find the master.
>
> Thanks
> Tian-Ying
>