mauhiz commented on code in PR #19972:
URL: https://github.com/apache/kafka/pull/19972#discussion_r2152124321
##########
storage/src/main/java/org/apache/kafka/storage/internals/log/LogSegment.java:
##########
@@ -192,8 +192,13 @@ public void sanityCheck(boolean timeIndexFileNewlyCreated)
throws IOException {
* the time index).
*/
public TimestampOffset readMaxTimestampAndOffsetSoFar() throws IOException
{
- if (maxTimestampAndOffsetSoFar == TimestampOffset.UNKNOWN)
- maxTimestampAndOffsetSoFar = timeIndex().lastEntry();
+ if (maxTimestampAndOffsetSoFar == TimestampOffset.UNKNOWN) {
Review Comment:
I thought `updateAndGet` could work to this effect
```java
maxTimestampAndOffsetSoFar.updateAndGet(t -> if (t ==
TimestampOffset.UNKNOWN) timeIndex().lastEntry() else t)
```
But I have not fully considered whether it would end up being slower on any
microbenchmark. It just looked simpler.
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