[KAFKA-664] Kafka server threads die due to OOME during long running test

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.8.0
• Labels: bugs
• Assignee: Jay Kreps
• Reporter: Neha Narkhede
• Created: 07/Dec/12 18:07
• Updated: 06/Jan/16 19:49
• Resolved: 18/Dec/12 00:42

Description

I set up a Kafka cluster with 5 brokers (JVM memory 512M) and set up a long running producer process that sends data to 100s of partitions continuously for ~15 hours. After ~4 hours of operation, few server threads (acceptor and processor) exited due to OOME -

[2012-12-07 08:24:44,355] ERROR OOME with size 1700161893 (kafka.network.BoundedByteBufferReceive)
java.lang.OutOfMemoryError: Java heap space
[2012-12-07 08:24:44,356] ERROR Uncaught exception in thread 'kafka-acceptor': (kafka.utils.Utils$)
java.lang.OutOfMemoryError: Java heap space
[2012-12-07 08:24:44,356] ERROR Uncaught exception in thread 'kafka-processor-9092-1': (kafka.utils.Utils$)
java.lang.OutOfMemoryError: Java heap space
[2012-12-07 08:24:46,344] INFO Unable to reconnect to ZooKeeper service, session 0x13afd0753870103 has expired, closing socket connection (org.apache.zookeeper.ClientCnxn)
[2012-12-07 08:24:46,344] INFO zookeeper state changed (Expired) (org.I0Itec.zkclient.ZkClient)
[2012-12-07 08:24:46,344] INFO Initiating client connection, connectString=eat1-app309.corp:12913,eat1-app310.corp:12913,eat1-app311.corp:12913,eat1-app312.corp:12913,eat1-app313.corp:12913 sessionTimeout=15000 watcher=org.I0Itec.zkclient.ZkClient@19202d69 (org.apache.zookeeper.ZooKeeper)
[2012-12-07 08:24:55,702] ERROR OOME with size 2001040997 (kafka.network.BoundedByteBufferReceive)
java.lang.OutOfMemoryError: Java heap space
[2012-12-07 08:25:01,192] ERROR Uncaught exception in thread 'kafka-request-handler-0': (kafka.utils.Utils$)
java.lang.OutOfMemoryError: Java heap space
[2012-12-07 08:25:08,739] INFO Opening socket connection to server eat1-app311.corp/172.20.72.75:12913 (org.apache.zookeeper.ClientCnxn)
[2012-12-07 08:25:14,221] INFO Socket connection established to eat1-app311.corp/172.20.72.75:12913, initiating session (org.apache.zookeeper.ClientCnxn)
[2012-12-07 08:25:17,943] INFO Client session timed out, have not heard from server in 3722ms for sessionid 0x0, closing socket connection and attempting reconnect (org.apache.zookeeper.ClientCnxn)
[2012-12-07 08:25:19,805] ERROR error in loggedRunnable (kafka.utils.Utils$)
java.lang.OutOfMemoryError: Java heap space
[2012-12-07 08:25:23,528] ERROR OOME with size 1853095936 (kafka.network.BoundedByteBufferReceive)
java.lang.OutOfMemoryError: Java heap space

It seems like it runs out of memory while trying to read the producer request, but its unclear so far.