mattisonchao commented on code in PR #3955:
URL: https://github.com/apache/bookkeeper/pull/3955#discussion_r1193169520
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bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/storage/ldb/LedgerMetadataIndex.java:
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@@ -300,6 +300,9 @@ public void flush() throws IOException {
int updatedLedgers = 0;
while (!pendingLedgersUpdates.isEmpty()) {
Review Comment:
If this method is not thread-safe, perhaps we could use the `poll` method
and determine if it is `null` to implement loop control.
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