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We shall set `transaction.timout.ms` default to 10000 ms (10 seconds) on Kafka Streams. For non-stream users, we highly recommend you to do the same if you want to use the new semantics.

Shrink abort timeout transaction scheduler interval

We shall set `transaction.abort.timed.out.transaction.cleanup.interval.ms` default to 10000 ms (10 seconds) on broker side (previously one minute). This config controls the scheduled interval for purging expired transactions, which we need to tune more frequently to timeout zombie transactions.

Offset Fetch Request 

We will add a new error code for consumer to wait for pending transaction clearance. In order to be able to return corresponding exceptions for old/new clients, we shall also bump the OffsetFetch protocol version.

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