Neha Narkhede created KAFKA-664:
-----------------------------------

             Summary: Kafka server threads die due to OOME during long running 
test
                 Key: KAFKA-664
                 URL: https://issues.apache.org/jira/browse/KAFKA-664
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 0.8
            Reporter: Neha Narkhede
            Priority: Blocker
             Fix For: 0.8


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. 

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