lhotari commented on code in PR #4306:
URL: https://github.com/apache/bookkeeper/pull/4306#discussion_r1603203766
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bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/storage/ldb/SingleDirectoryDbLedgerStorage.java:
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@@ -480,8 +480,12 @@ public long addEntry(ByteBuf entry) throws IOException,
BookieException {
long stamp = writeCacheRotationLock.tryOptimisticRead();
boolean inserted = false;
- inserted = writeCache.put(ledgerId, entryId, entry);
- if (!writeCacheRotationLock.validate(stamp)) {
+ // If the stamp is 0, the lock was exclusively acquired, validation
will fail, and we can skip this put.
Review Comment:
It seems like there's invalid use of the StampedLock before this PR. Read
operations are used for write operations. That's not supported by StampedLock.
I don't see how that could be useful.
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