[jira] [Created] (KAFKA-6429) dirtyNonActiveSegments in `cleanableOffsets` should only be created when log.cleaner.min.compaction.lag.ms > 0

["huxihx (JIRA)" <ji...@apache.org>]

huxihx created KAFKA-6429:
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             Summary: dirtyNonActiveSegments in `cleanableOffsets` should only be created when log.cleaner.min.compaction.lag.ms > 0
                 Key: KAFKA-6429
                 URL: https://issues.apache.org/jira/browse/KAFKA-6429
             Project: Kafka
          Issue Type: Bug
          Components: log
    Affects Versions: 1.0.0
            Reporter: huxihx
            Assignee: huxihx


LogCleanerManager.cleanableOffsets always created objects to hold all dirty non-active segments, as shown below:

{code:java}
// dirty log segments
    val dirtyNonActiveSegments = log.logSegments(firstDirtyOffset, log.activeSegment.baseOffset)
{code}

Actually, these objects will not be used when `log.cleaner.min.compaction.lag.ms` is 0 which is already the default value. We could defer the creation. In doing so can we reduce the heap size but also avoid the blocking access to the segments incurred by Log.segments.




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