Can you disable the preemption for the giraph pool? It's not great to
preempt those tasks.
Avery
On 5/6/13 6:37 PM, Ramani, Arun wrote:
Hi,
I am running Fair scheduler with many applications in hadoop stack in
my cluster (like pig, hive, hbase etc). I have dedicated a pool for
Giraph and want to run giraph along with those other applications. I
have configured pre-emption and and set the
"minsharepreemptiontimeout=5" (sec – for the jobs submitted to this
pool to wait to get the min share).
I am trying to run giraph in this mode. I see that jobs from other
pools are getting pre-empted to give the giraph job's pool its
configured min share but my job fails with "Unable to create native
thread" error. This same job passes if the slots are available
immediately without having to wait for the tasks from other queues to
be pre-empted. I also tried to tweak the
"giraph.minPercentResponded=50.0f". My Giraph job still fails. Please
help in this scenario.
Basically, I wanted to know how to configure giraph to wait for a
threshold for the slots to be available for it through pre-emption.
Thanks
Arun Ramani
