For Testing The Name Node Crashes and failures. For Single Point of Failure
--
Pavan Kumar Polineni
or "kill -9 namenode_pid" to simulate NN crashed.
On Wed, Jun 19, 2013 at 2:42 PM, Azuryy Yu wrote:
> $HADOOP_HOME/bin/hadoop-daemon.sh stop namenode
>
>
>
> On Wed, Jun 19, 2013 at 2:38 PM, Pavan Kumar Polineni <
> smartsunny...@gmail.com> wrote:
>
>> For Testing The Name Node Crashes and fail
$HADOOP_HOME/bin/hadoop-daemon.sh stop namenode
On Wed, Jun 19, 2013 at 2:38 PM, Pavan Kumar Polineni <
smartsunny...@gmail.com> wrote:
> For Testing The Name Node Crashes and failures. For Single Point of Failure
>
> --
> Pavan Kumar Polineni
>
are you testing it for HA?
which version of hadoop are you using?
can you explain your test scenario in detail
On Wed, Jun 19, 2013 at 12:08 PM, Pavan Kumar Polineni <
smartsunny...@gmail.com> wrote:
> For Testing The Name Node Crashes and failures. For Single Point of Failure
>
> --
> Pavan K
I am checking for Cloudera only. But no HA? just we have single Name node.
For testing purposes and preventing actions. Preparing expected scenarios
and solutions for them.
On Wed, Jun 19, 2013 at 12:14 PM, Nitin Pawar wrote:
> are you testing it for HA?
> which version of hadoop are you using?
hey Pavan,
Hadoop-2.* has HDFS HA, which hadoop version are you using?
On Wed, Jun 19, 2013 at 2:46 PM, Pavan Kumar Polineni <
smartsunny...@gmail.com> wrote:
> I am checking for Cloudera only. But no HA? just we have single Name node.
> For testing purposes and preventing actions. Preparing e
I am using Hadoop-1. I dont want HA.
On Wed, Jun 19, 2013 at 12:20 PM, Azuryy Yu wrote:
> hey Pavan,
> Hadoop-2.* has HDFS HA, which hadoop version are you using?
>
>
>
>
> On Wed, Jun 19, 2013 at 2:46 PM, Pavan Kumar Polineni <
> smartsunny...@gmail.com> wrote:
>
>> I am checking for Cloudera
You can stop the Namenode daemon or even power the host off :)
On Wed, Jun 19, 2013 at 12:27 PM, Pavan Kumar Polineni <
smartsunny...@gmail.com> wrote:
> I am using Hadoop-1. I dont want HA.
>
>
> On Wed, Jun 19, 2013 at 12:20 PM, Azuryy Yu wrote:
>
>> hey Pavan,
>> Hadoop-2.* has HDFS HA, whic
Hi Manoj,
If we power of the Host then the secondary name node also goes down. I want
to simulate the name node failure and what to do some recovery. Every thing
is part of the testing the name node recovery.
On Wed, Jun 19, 2013 at 12:32 PM, Manoj S wrote:
> You can stop the Namenode daemon o
If I understand correctly,
what you want to do is crash the namenode manually and recover it using
secondary namenode?
and you want to know both how to crash the namenode as well how to recover
it
Is that correct ?
On Wed, Jun 19, 2013 at 12:34 PM, Pavan Kumar Polineni <
smartsunny...@gmail.com
hi Nitin,
That's true mate. Finally your understand me. And if you have some
scenarios also accepted :).
Thanks In Advance.
On Wed, Jun 19, 2013 at 1:01 PM, Nitin Pawar wrote:
> If I understand correctly,
>
> what you want to do is crash the namenode manually and recover it using
> secondary n
Hi,
Following might help.
Less(rather minimal) jvm heap size for NN.
Create many small files with increased replication factor(more information
for NN to store in memory)
keep only one name node directory for storing meta data(less diskspace will
trigger the process E.g mount a tiny disk and po
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