satishd commented on code in PR #13561:
URL: https://github.com/apache/kafka/pull/13561#discussion_r1292967405
##########
core/src/main/scala/kafka/log/UnifiedLog.scala:
##########
@@ -1390,7 +1424,15 @@ class UnifiedLog(@volatile var logStartOffset: Long,
private def deleteOldSegments(predicate: (LogSegment, Option[LogSegment]) =>
Boolean,
reason: SegmentDeletionReason): Int = {
def shouldDelete(segment: LogSegment, nextSegmentOpt: Option[LogSegment]):
Boolean = {
- highWatermark >=
nextSegmentOpt.map(_.baseOffset).getOrElse(localLog.logEndOffset) &&
+ val upperBoundOffset =
nextSegmentOpt.map(_.baseOffset).getOrElse(localLog.logEndOffset)
+
+ // Check not to delete segments which are not yet copied to tiered
storage
+ val isSegmentTieredToRemoteStorage =
+ if (remoteLogEnabled()) upperBoundOffset > 0 && upperBoundOffset - 1
<= highestOffsetInRemoteStorage
+ else true
Review Comment:
It was implicit from the condition that it is relevant only when remote
storage is enabled. I removed the value and added a condition and the
respective comments for better clarity.
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