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From "Brett Rann (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-6185) java.lang.OutOfMemoryError memory leak on 1.0.0 with 0.11.0.1 on disk and converting to 0.9 clients
Date Wed, 08 Nov 2017 03:37:00 GMT
Brett Rann created KAFKA-6185:
---------------------------------

             Summary: java.lang.OutOfMemoryError memory leak on 1.0.0 with 0.11.0.1 on disk
and converting to 0.9 clients
                 Key: KAFKA-6185
                 URL: https://issues.apache.org/jira/browse/KAFKA-6185
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 1.0.0
         Environment: Ubuntu 14.04.5 LTS
5 brokers: 1&2 on 1.0.0 3,4,5 on 0.11.0.1
inter.broker.protocol.version=0.11.0.1
log.message.format.version=0.11.0.1
clients a mix of 0.9, 0.10, 0.11
            Reporter: Brett Rann
         Attachments: Kafka_Internals___Datadog.png, Kafka_Internals___Datadog.png

We are testing 1.0.0 in a couple of environments.
Both have about 5 brokers, with two 1.0.0 brokers and the rest 0.11.0.1 brokers.
One is using on disk message format 0.9.0.1, the other 0.11.0.1
we have 0.9, 0.10, and 0.11 clients connecting.

The cluster on the 0.11.0.1 format is consistently having memory issues.

The first occurrence of the error comes along with this stack trace

{noformat}
{"timestamp":"2017-11-06 14:22:32,402","level":"ERROR","logger":"kafka.server.KafkaApis","thread":"kafka-request-handler-7","message":"[KafkaApi-1]
Error when handling request {replica_id=-1,max_wait_time=500,min_bytes=1,topics=[{topic=maxwell.users,partitions=[{partition=0,fetch_offset=227537,max_bytes=11000000},{partition=4,fetch_offset=354468,max_bytes=11000000},{partition=5,fetch_offset=266524,max_bytes=11000000},{partition=8,fetch_offset=324562,max_bytes=11000000},{partition=10,fetch_offset=292931,max_bytes=11000000},{partition=12,fetch_offset=325718,max_bytes=11000000},{partition=15,fetch_offset=229036,max_bytes=11000000}]}]}"}
java.lang.OutOfMemoryError: Java heap space
        at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:57)
        at java.nio.ByteBuffer.allocate(ByteBuffer.java:335)
        at org.apache.kafka.common.record.AbstractRecords.downConvert(AbstractRecords.java:101)
        at org.apache.kafka.common.record.FileRecords.downConvert(FileRecords.java:253)
        at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$convertedPartitionData$1$1$$anonfun$apply$4.apply(KafkaApis.scala:520)
        at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$convertedPartitionData$1$1$$anonfun$apply$4.apply(KafkaApis.scala:518)
        at scala.Option.map(Option.scala:146)
        at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$convertedPartitionData$1$1.apply(KafkaApis.scala:518)
        at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$convertedPartitionData$1$1.apply(KafkaApis.scala:508)
        at scala.Option.flatMap(Option.scala:171)
        at kafka.server.KafkaApis.kafka$server$KafkaApis$$convertedPartitionData$1(KafkaApis.scala:508)
        at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$createResponse$2$1.apply(KafkaApis.scala:556)
        at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$createResponse$2$1.apply(KafkaApis.scala:555)
        at scala.collection.Iterator$class.foreach(Iterator.scala:891)
        at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)
        at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
        at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
        at kafka.server.KafkaApis.kafka$server$KafkaApis$$createResponse$2(KafkaApis.scala:555)
        at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$fetchResponseCallback$1$1.apply(KafkaApis.scala:569)
        at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$fetchResponseCallback$1$1.apply(KafkaApis.scala:569)
        at kafka.server.KafkaApis$$anonfun$sendResponseMaybeThrottle$1.apply$mcVI$sp(KafkaApis.scala:2034)
        at kafka.server.ClientRequestQuotaManager.maybeRecordAndThrottle(ClientRequestQuotaManager.scala:52)
        at kafka.server.KafkaApis.sendResponseMaybeThrottle(KafkaApis.scala:2033)
        at kafka.server.KafkaApis.kafka$server$KafkaApis$$fetchResponseCallback$1(KafkaApis.scala:569)
        at kafka.server.KafkaApis$$anonfun$kafka$server$KafkaApis$$processResponseCallback$1$1.apply$mcVI$sp(KafkaApis.scala:588)
        at kafka.server.ClientQuotaManager.maybeRecordAndThrottle(ClientQuotaManager.scala:175)
        at kafka.server.KafkaApis.kafka$server$KafkaApis$$processResponseCallback$1(KafkaApis.scala:587)
        at kafka.server.KafkaApis$$anonfun$handleFetchRequest$3.apply(KafkaApis.scala:604)
        at kafka.server.KafkaApis$$anonfun$handleFetchRequest$3.apply(KafkaApis.scala:604)
        at kafka.server.ReplicaManager.fetchMessages(ReplicaManager.scala:820)
        at kafka.server.KafkaApis.handleFetchRequest(KafkaApis.scala:596)
        at kafka.server.KafkaApis.handle(KafkaApis.scala:100)
{noformat}

And then after a few of those it settles into this kind of pattern

{noformat}
{"timestamp":"2017-11-06 15:06:48,114","level":"ERROR","logger":"kafka.server.KafkaApis","thread":"kafka-request-handler-1","message":"[KafkaApi-1]
Error when handling request {replica_id=-1,max_wait_time=500,min_bytes=1,topics=[{topic=maxwell.accounts,partitions=[{partition=4,fetch_offset=560631,max_bytes=11000000},{partition=8,fetch_offset=557589,max_bytes=11000000},{partition=12,fetch_offset=551712,max_bytes=11000000}]}]}"}
java.lang.OutOfMemoryError: Java heap space
{"timestamp":"2017-11-06 15:06:48,811","level":"ERROR","logger":"kafka.server.KafkaApis","thread":"kafka-request-handler-7","message":"[KafkaApi-1]
Error when handling request {replica_id=-1,max_wait_time=500,min_bytes=1,topics=[{topic=maxwell.accounts,partitions=[{partition=4,fetch_offset=560631,max_bytes=11000000},{partition=8,fetch_offset=557589,max_bytes=11000000},{partition=12,fetch_offset=551712,max_bytes=11000000}]}]}"}
java.lang.OutOfMemoryError: Java heap space
{noformat}

I've attached the heap use graphs. It steadily increases to max at which time the error starts
appearing.

I've tripled the heap space for one of the 1.0.0 hosts to see what happens, and it similarly
climbs to near 6, then similarly starts having java.lang.OutOfMemoryError errors. I've attached
those heap space graphs also, where the line that starts climbing from 2gb was when it was
restarted with 6gb heap. The out of memory error started right at the peak of the flatline.

Here's a snippit from the broker logs: https://gist.github.com/brettrann/4bb8041e884a299b7b0b12645a04492d

I've redacted some group names because I'd need to check with the teams about making them
public. Let me know what more is needed and I can gather it. This is a test cluster and the
problem appears reproducible easily enough. Happy to gather as much info as needed.

Our config is: 
{noformat}
broker.id=2
delete.topic.enable=true
auto.create.topics.enable=false
auto.leader.rebalance.enable=true
inter.broker.protocol.version=0.11.0.1
log.message.format.version=0.11.0.1
group.max.session.timeout.ms = 300000
port=9092
num.network.threads=3
num.io.threads=8
socket.send.buffer.bytes=102400
socket.receive.buffer.bytes=102400
socket.request.max.bytes=104857600
replica.fetch.max.bytes=10485760
log.dirs=/data/kafka/logs
num.partitions=1
num.recovery.threads.per.data.dir=1
log.retention.hours=168
offsets.retention.minutes=10080
log.segment.bytes=1073741824
log.retention.check.interval.ms=300000
log.cleaner.enable=true
zookeeper.connect=zoo1:2181,zoo2:2181,zoo3:2181/kafka
zookeeper.connection.timeout.ms=6000
{noformat}

This was also reported attached to the end of this ticket https://issues.apache.org/jira/browse/KAFKA-6042
which is a broker lockup/FD issue, but a new ticket was requested.



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