[KAFKA-2352] Possible memory leak in MirrorMaker and/or new Producer

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 0.8.2.1
• Assignee: Unassigned
• Reporter: Kostya Golikov
• Created: 21/Jul/15 16:11
• Updated: 23/Jul/15 11:18
• Resolved: 23/Jul/15 11:18

Description

I've been playing around with Mirror Maker (version from trunk, dated July 7th) and got a few problems, most noticeable of which is that MirrorMaker exhausts it's memory pool, even though it's size set to relatively huge value of 132 MB, and individual messages are around 2 KB. Batch size is set to just 2 messages (full configs are attached).

[2015-07-21 15:19:52,915] FATAL [mirrormaker-thread-1] Mirror maker thread failure due to  (kafka.tools.MirrorMaker$MirrorMakerThread)
org.apache.kafka.clients.producer.BufferExhaustedException: You have exhausted the 134217728 bytes of memory you configured for the client and the client is configured to error rather than block when memory is exhausted.
	at org.apache.kafka.clients.producer.internals.BufferPool.allocate(BufferPool.java:124)
	at org.apache.kafka.clients.producer.internals.RecordAccumulator.append(RecordAccumulator.java:172)
	at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:388)
	at kafka.tools.MirrorMaker$MirrorMakerProducer.send(MirrorMaker.scala:380)
	at kafka.tools.MirrorMaker$MirrorMakerThread$$anonfun$run$3.apply(MirrorMaker.scala:311)
	at kafka.tools.MirrorMaker$MirrorMakerThread$$anonfun$run$3.apply(MirrorMaker.scala:311)
	at scala.collection.Iterator$class.foreach(Iterator.scala:727)
	at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
	at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
	at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
	at kafka.tools.MirrorMaker$MirrorMakerThread.run(MirrorMaker.scala:311)

Am I doing something wrong? Any help in further diagnosing of this problem might be handy.