CODEWITHSUNDEEP
ubuntuhadoopapache-zookeeperapache-kafka
yoganandh
yoganandh

Reputation: 277

Unrecognized VM option '+UseCompressedOops' when running kafka from my ubuntu in vmware

I am working with ubuntu using VMware I have Installed hadoop single node cluster in it. Then I have installed zookeeper and had run the zookeeper. then when I run my "Apache kafka" it throws an error.

Unrecognized VM option '+UseCompressedOops'

Could not create the Java virtual machine

single@ubuntu:~/yoga/zookeeper-3.4.5/bin$ ./zkServer.sh start

JMX enabled by default

Using config: /home/single/yoga/zookeeper-3.4.5/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED

single@ubuntu:~/yoga/kafka_2.8.0-0.8.0$ bin/kafka-server-start.sh config/server.properties

Unrecognized VM option '+UseCompressedOops'

Could not create the Java virtual machine.

Upvotes: 4

Views: 11324

Answers (3)

Sri
Sri

Reputation: 4853

Since your VM doesn't support '+UseCompressedOops' option. To fix it, remove that option from the kafka's configuration which'll help you to start the both (zookeeper & kafka) servers.

1) Go to the Kafka installation directory :

cd kafka_2.8.0-0.8

2) Edit the Kafka's classpath setter script :

vi bin/kafka-run-class.sh

3) Search for "KAFKA_JVM_PERFORMANCE_OPTS" token & remove '-XX:+UseCompressedOops' from that line.

i.e., before removing :

KAFKA_JVM_PERFORMANCE_OPTS="-server -XX:+UseCompressedOops -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:+CMSScavengeBeforeRemark -XX:+DisableExplicitGC -Djava.awt.headless=true"

with after removing :

KAFKA_JVM_PERFORMANCE_OPTS="-server -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:+CMSScavengeBeforeRemark -XX:+DisableExplicitGC -Djava.awt.headless=true"

4) Start your both zookeeper & kafka server instance 

./bin/zookeeper-server-start.sh config/zookeeper.properties
./bin/kafka-server-start.sh config/server.properties

Upvotes: 13

user2720864
user2720864

Reputation: 8161

This actually depends on the VM mode you are running with .. there are 2 types
1) Server side
2) Client side

+UseCompressedOops is recognized by the server VM and probably that's the reason why you are getting this error.. there could be multiple ways to check under which mode the VM is currently running, but the easiest one I could find is to simply run java -version and it should print some thing like this 

    Java HotSpot(TM) Client VM (build 24.51-b03, mixed mode, sharing)

there are few nice discussion regarding these two flavors of VM. You can take a look at @VonC 's answer here regarding the basic differnece between these two.

more discussions here
What does the UseCompressedOops JVM flag do and when should I use it?
http://www.oracle.com/technetwork/java/javase/tech/index-jsp-136373.html http://www.oracle.com/technetwork/java/whitepaper-135217.html

Upvotes: 4

Kuntal-G
Kuntal-G

Reputation: 2981

Are you using 32 bit or 64 bit machine? I have faced similar error and i resolved it by doing following steps:

1) download kafka ( in my case kafka-0.7.2-incubating-src)

2) extract it

3) cd to kafka home(where you extract the tgz)

/home/kuntal/Kuntal/BIG_DATA/kafka-0.7.2-incubating-src

4) run

./sbt update ./sbt package

5) now cd to kafaka home bin

/home/kuntal/Kuntal/BIG_DATA/kafka-0.7.2-incubating-src/bin

6) type

kafka-server-start.sh /home/kuntal/Kuntal/BIG_DATA/kafka-0.7.2-incubating-src/config/server.properties

you will see Kafka server started in terminal.Hope this help someone !! :)

Upvotes: 0

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