[jira] [Created] (CASSANDRA-16975) CompactionTask#runMayThrow should not remove new SSTables from the tracker for offline transactions

["Aleksandr Sorokoumov (Jira)" <ji...@apache.org>]

Aleksandr Sorokoumov created CASSANDRA-16975:
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             Summary: CompactionTask#runMayThrow should not remove new SSTables from the tracker for offline transactions
                 Key: CASSANDRA-16975
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16975
             Project: Cassandra
          Issue Type: Bug
          Components: Local/Compaction
            Reporter: Aleksandr Sorokoumov
            Assignee: Aleksandr Sorokoumov


Right now, {{CompactionTask#runMayThrow}} removes new SSTables from the tracker for offline transactions ([code|https://github.com/apache/cassandra/blob/f7c71f65c000c2c3ef7df1b034b8fdd822a396d8/src/java/org/apache/cassandra/db/compaction/CompactionTask.java#L227-L230]). This change was added in CASSANDRA-8962, prior to the introduction of lifecycle transactions in CASSANDRA-8568. I suspect that this behavior might be undesired and could have just fallen through the cracks.

To my knowledge, this code does not cause any known bugs solely because in-tree tools do not access the SSTables they produce before exiting. However, if someone is to write, say, offline compaction daemon, it might break on subsequent iterations because newly created SSTables won't be in the tracker.



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