Saturday, November 28, 2015

Apache Spark : how to start worker across cluster

Apache Spark : how to start worker across cluster
previous post - working on RPostgresql

Apache Spark cluster setup. refer if you have any issue Spark over Yarn

How to start worker node from newly added Spark slaves.?
Spark has two slave start-up script under sbin/ dir

start-slaves.sh -: to start all the worker across slaves machine. this should run from Master node

start-slave.sh -: to start Worker daemon from each and individual Slave. this should run from each slave node. Ex:

sbin/start-slave.sh spark://10.184.48.55:7077
above command need to run from slave machine. here 10.184.48.55 is where Spark Master running.
Error
shutting down Netty transport
sbin/start-slave.sh spark://10.184.48.55:7077
15/11/27 19:53:53 ERROR NettyTransport: failed to bind to /10.184.48.183:0, shutting down Netty transport
Solution
Error due to improper configuration in /etc/hosts. set SPARK_LOCAL_IP to pointng to the local worker system.

export SPARK_LOCAL_IP=127.0.0.1

OR
export SPARK_LOCAL_IP=IP_ADDR_OF_THE_SYSTEM
Next :
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