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Posted to common-user@hadoop.apache.org by ChingShen <ch...@gmail.com> on 2010/12/13 08:54:01 UTC

Question about AvatarNode

Hi all,

   I read the "Looking at the code behind our three uses of Apache Hadoop"(
http://www.facebook.com/note.php?note_id=468211193919&comments) article that
mentioned the primary AvatarNode and the standby AvatarNode are coordinated
via Apache ZooKeeper, but why can't I find any code snippet about ZooKeeper
in HDFS-976?

Thanks.

Shen

Re: Question about AvatarNode

Posted by ChingShen <ch...@gmail.com>.

Hi Ted,

 Thanks for your reply.

Shen

On Tue, Dec 14, 2010 at 1:37 PM, Ted Yu <yu...@gmail.com> wrote:

> Check out the code on github
> You can find
>
> contrib/highavailability/src/java/org/apache/hadoop/hdfs/AvatarZooKeeperClient.java
>
> On Sun, Dec 12, 2010 at 11:54 PM, ChingShen <ch...@gmail.com>
> wrote:
>
> > Hi all,
> >
> >   I read the "Looking at the code behind our three uses of Apache
> Hadoop"(
> > http://www.facebook.com/note.php?note_id=468211193919&comments) article
> > that
> > mentioned the primary AvatarNode and the standby AvatarNode are
> coordinated
> > via Apache ZooKeeper, but why can't I find any code snippet about
> ZooKeeper
> > in HDFS-976?
> >
> > Thanks.
> >
> > Shen
> >
>

Re: Question about AvatarNode

Posted by Ted Yu <yu...@gmail.com>.

Check out the code on github
You can find
contrib/highavailability/src/java/org/apache/hadoop/hdfs/AvatarZooKeeperClient.java

On Sun, Dec 12, 2010 at 11:54 PM, ChingShen <ch...@gmail.com> wrote:

> Hi all,
>
>   I read the "Looking at the code behind our three uses of Apache Hadoop"(
> http://www.facebook.com/note.php?note_id=468211193919&comments) article
> that
> mentioned the primary AvatarNode and the standby AvatarNode are coordinated
> via Apache ZooKeeper, but why can't I find any code snippet about ZooKeeper
> in HDFS-976?
>
> Thanks.
>
> Shen
>