Jason Gustafson created KAFKA-13753:
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Summary: Log cleaner should transaction metadata in index until
corresponding marker is removed
Key: KAFKA-13753
URL: https://issues.apache.org/jira/browse/KAFKA-13753
Project: Kafka
Issue Type: Bug
Reporter: Jason Gustafson
Assignee: Jason Gustafson
Currently the log cleaner will remove aborted transactions from the index as
soon as it detects that the data from the transaction is gone. It does not wait
until the corresponding marker has also been removed. Although it is extremely
unlikely, it seems possible today that a Fetch might fail to return the aborted
transaction metadata correctly if a log cleaning occurs concurrently. This is
because the collection of aborted transactions is only done after the reading
data from the log. It would be safer to preserve the aborted transaction
metadata in the index until the marker is also removed.
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