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https://issues.apache.org/jira/browse/KAFKA-4741?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Satish Duggana updated KAFKA-4741:
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Summary: Memory leak in RecordAccumulator.append (was: Memory leak in
RecordAccumulator#append)
> Memory leak in RecordAccumulator.append
> ---------------------------------------
>
> Key: KAFKA-4741
> URL: https://issues.apache.org/jira/browse/KAFKA-4741
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Reporter: Satish Duggana
>
> RecordAccumulator creates a `ByteBuffer` from free memory pool. This should
> be deallocated when invocations encounter an exception or throwing any
> exceptions.
> I added todo comment lines in the below code for cases to deallocate that
> buffer.
> {code:title=RecordProducer.java|borderStyle=solid}
> ByteBuffer buffer = free.allocate(size, maxTimeToBlock);
> synchronized (dq) {
> // Need to check if producer is closed again after grabbing
> the dequeue lock.
> if (closed)
> // todo buffer should be cleared.
> throw new IllegalStateException("Cannot send after the
> producer is closed.");
> // todo buffer should be cleared up when tryAppend throws an
> Exception
> RecordAppendResult appendResult = tryAppend(timestamp, key,
> value, callback, dq);
> if (appendResult != null) {
> // Somebody else found us a batch, return the one we
> waited for! Hopefully this doesn't happen often...
> free.deallocate(buffer);
> return appendResult;
> }
> {code}
> I will raise PR for the same soon.
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