Ismael Juma created KAFKA-2335:
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Summary: Javadoc for Consumer says that it's thread-safe
Key: KAFKA-2335
URL: https://issues.apache.org/jira/browse/KAFKA-2335
Project: Kafka
Issue Type: Bug
Reporter: Ismael Juma
This looks like it was left there by mistake:
{quote}
* The consumer is thread safe but generally will be used only from within a
single thread. The consumer client has no threads of it's own, all work is done
in the caller's thread when calls are made on the various methods exposed.
{quote}
A few paragraphs below it says:
{quote}
The Kafka consumer is NOT thread-safe. All network I/O happens in the thread of
the application making the call. It is the responsibility of the user to ensure
that multi-threaded access is properly synchronized. Un-synchronized access
will result in {@link ConcurrentModificationException}.
{quote}
This matches what the code does, so the former quoted section should probably
be deleted.
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