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Posted to dev@gearpump.apache.org by "Karol Brejna (JIRA)" <ji...@apache.org> on 2016/05/19 11:54:12 UTC
[jira] [Created] (GEARPUMP-147) java.lang.ClassNotFoundException
when running on worker with worker.executor-share-same-jvm-as-worker = true
Karol Brejna created GEARPUMP-147:
-------------------------------------
Summary: java.lang.ClassNotFoundException when running on worker with worker.executor-share-same-jvm-as-worker = true
Key: GEARPUMP-147
URL: https://issues.apache.org/jira/browse/GEARPUMP-147
Project: Apache Gearpump
Issue Type: Task
Reporter: Karol Brejna
Doing GEARPUMP-146 I hit a problem: I was able to run a master on pc and a worker on raspi. After deploying wordcountjava-2.11-0.8.0-assembly.jar the example didn't start.
I reproduced this on "pure pc" cluster.
I've prepared dedicated config files:
* gear.pc.conf - normal (default) configuration for master and workers ran on a PC
* gear.pc.slimworker.conf - intends to have lower requirements for memory, cpu - to be used on a device (raspi, edison)
*Obtaining binary and creating config files*
{code}
wget https://github.com/gearpump/gearpump/releases/download/0.8.0/gearpump-2.11-0.8.0.zip
unzip gearpump-2.11-0.8.0.zip
cd gearpump-2.11-0.8.0
cp conf/gear.conf conf/gear.original.conf
cp conf/gear.conf conf/gear.pc.conf
cp conf/gear.conf conf/gear.pc.slimworker.conf
{code}
*Preparing "PC" conf*
The only real change here is putting the IP of the machine that will run the master:
{code}
cluster {
masters = ["192.168.1.115:3000"]
}
hostname = "192.168.1.115"
{code}
*Preparing device conf*
Compared to previous config, this config should set up less worker slots, smaller -Xmx jvm switch for worker, and executor-share-same-jvm-as-worker set to true:
{code}
worker.slots = 100
worker.executor-share-same-jvm-as-worker = true
executor {
vmargs = "-server -Xms512M -Xmx512M -Xss1M -XX:+HeapDumpOnOutOfMemoryError -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=80 -XX:+UseParNewGC -XX:NewRatio=3 -Djava.rmi.server.hostname=localhost"
extraClasspath = ""
}
{code}
*Running the cluster:*
{code}
echo "Starting the master"
cp conf/gear.pc.conf conf/gear.conf
bin/master -ip 192.168.1.115 -port 3000 &
echo "Starting services"
bin/services &
echo "Starting a worker (configured as on the device)"
cp conf/gear.pc.slimworker.conf conf/gear.conf
bin/worker &
{code}
*Deploing the DAG*
I've deployed wordcountjava-2.11-0.8.0-assembly.jar.
The app deploys, but doesn't run.
After changing worker.executor-share-same-jvm-as-worker to false and restarting the cluster, example dag works.
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