Hello,
I'm trying to configure HA for the HDFS namenode with QJM following the
instructions form here
http://hadoop.apache.org/docs/r2.2.0/hadoop-yarn/hadoop-yarn-site/HDFSHighAvailabilityWithQJM.html.
My setup is the following : Ubuntu 12.04.5 LTS on all the nodes, Hadoop 2.4.1
installed, two
Get we get rid of ZK completely? Since JNs are like simplified version of
ZK, it should be possible to use it for election.
I think it pretty easy:
- JN exposes latest heartbeat information via RPC (the active NN
heart-beats JNs every 1 second)
- zkfc decided whether the current active NN is alive
Hi Liang,
Answers inline below.
On Sun, Oct 14, 2012 at 8:01 PM, 谢良 wrote:
> Hi Todd and other HA experts,
>
> I've two question:
>
> 1) why the zkfc is a seperate process, i mean, what's the primary design
> consideration that we didn't integrate zkfc features into namenode self ?
>
>
There ar
On 15 October 2012 04:01, 谢良 wrote:
> Hi Todd and other HA experts,
>
> I've two question:
>
> 1) why the zkfc is a seperate process, i mean, what's the primary design
> consideration that we didn't integrate zkfc features into namenode self ?
>
I don't know the answer to that, except I do know
Hi Todd and other HA experts,
I've two question:
1) why the zkfc is a seperate process, i mean, what's the primary design
consideration that we didn't integrate zkfc features into namenode self ?
2) If i deploy CDH4.1(included QJM feature), since QJM can do fencing writer,
so can i just conf
