junrao commented on a change in pull request #11199:
URL: https://github.com/apache/kafka/pull/11199#discussion_r687993862
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File path: core/src/main/scala/kafka/log/LogCleanerManager.scala
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@@ -595,8 +595,8 @@ private[log] object LogCleanerManager extends Logging {
// may be cleaned
val firstUncleanableDirtyOffset: Long = Seq(
- // we do not clean beyond the first unstable offset
- log.firstUnstableOffset,
+ // we do not clean beyond the last stable offset
Review comment:
This is an existing issue. But could we update the comment in line 593
to include last stable offset too?
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File path: core/src/test/scala/unit/kafka/log/LogCleanerManagerTest.scala
##########
@@ -541,6 +541,29 @@ class LogCleanerManagerTest extends Logging {
while(log.numberOfSegments < 8)
log.appendAsLeader(records(log.logEndOffset.toInt,
log.logEndOffset.toInt, time.milliseconds()), leaderEpoch = 0)
+ log.updateHighWatermark(50)
+
+ val lastCleanOffset = Some(0L)
+ val cleanableOffsets = LogCleanerManager.cleanableOffsets(log,
lastCleanOffset, time.milliseconds)
+ assertEquals(0L, cleanableOffsets.firstDirtyOffset, "The first cleanable
offset starts at the beginning of the log.")
+ assertEquals(log.highWatermark,
cleanableOffsets.firstUncleanableDirtyOffset, "The first uncleanable offset is
bounded by the hwm.")
Review comment:
Since the description of the test says bounded by LSO, should we change
log.highWatermark to log.lastStableOffset and the error message accordingly?
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