jvrao commented on a change in pull request #853: BP-14 WriteFlag DEFERRED_SYNC
Client Side Implementation
URL: https://github.com/apache/bookkeeper/pull/853#discussion_r188506076
##########
File path:
bookkeeper-server/src/main/java/org/apache/bookkeeper/client/LedgerHandle.java
##########
@@ -1678,17 +1692,23 @@ void sendAddSuccessCallbacks() {
return;
}
// Check if it is the next entry in the sequence.
- if (pendingAddOp.entryId != 0 && pendingAddOp.entryId !=
lastAddConfirmed + 1) {
+ if (pendingAddOp.entryId != 0 && pendingAddOp.entryId !=
pendingAddsSequenceHead) {
if (LOG.isDebugEnabled()) {
- LOG.debug("Head of the queue entryId: {} is not lac: {} +
1", pendingAddOp.entryId,
- lastAddConfirmed);
+ LOG.debug("Head of the queue entryId: {} is not the
expected value: {}", pendingAddOp.entryId,
+ pendingAddsSequenceHead);
}
return;
}
pendingAddOps.remove();
explicitLacFlushPolicy.updatePiggyBackedLac(lastAddConfirmed);
- lastAddConfirmed = pendingAddOp.entryId;
+ if (writeFlags.contains(WriteFlag.DEFERRED_SYNC)) {
+ // cannot update LastAddConfirmed, we are not sure bookie has
stored the entry durably at this point
+ } else {
+ this.lastAddConfirmed = Math.max(lastAddConfirmed,
pendingAddOp.entryId);
+ }
+
+ pendingAddsSequenceHead = pendingAddOp.entryId + 1;
Review comment:
I would do:
pendingAddsSequenceHead = pendingAddOp.entryId;
if (!writeFlags.contains(WriteFlag.DEFERRED_SYNC)) {
lastAddConfirmed = pendingAddsSequenceHead;
}
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