gaozhangmin commented on code in PR #3522:
URL: https://github.com/apache/bookkeeper/pull/3522#discussion_r991807482
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bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/BookieImpl.java:
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@@ -935,9 +936,10 @@ private void addEntryInternal(LedgerDescriptor handle,
ByteBuf entry,
// journal `addEntry` should happen after the entry is added to ledger
storage.
// otherwise the journal entry can potentially be rolled before the
ledger is created in ledger storage.
- if (masterKeyCache.get(ledgerId) == null) {
+ if (masterKeyCache.getIfPresent(ledgerId) == null) {
// Force the load into masterKey cache
- byte[] oldValue = masterKeyCache.putIfAbsent(ledgerId, masterKey);
+ byte[] oldValue = masterKeyCache.getIfPresent(ledgerId);
+ masterKeyCache.put(ledgerId, masterKey);
if (oldValue == null) {
Review Comment:
We should avoid duplicately writing masterKey to journal file, even
duplicate writing has no problem.
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