jolshan commented on code in PR #16215:
URL: https://github.com/apache/kafka/pull/16215#discussion_r1628116981
##########
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/runtime/CoordinatorRuntime.java:
##########
@@ -583,11 +674,330 @@ private void unload() {
}
timer.cancelAll();
deferredEventQueue.failAll(Errors.NOT_COORDINATOR.exception());
+ failCurrentBatch(Errors.NOT_COORDINATOR.exception());
if (coordinator != null) {
coordinator.onUnloaded();
}
coordinator = null;
}
+
+ /**
+ * Frees the current batch.
+ */
+ private void freeCurrentBatch() {
+ // Cancel the linger timeout.
+ currentBatch.lingerTimeoutTask.ifPresent(TimerTask::cancel);
+
+ // Release the buffer.
+ bufferSupplier.release(currentBatch.buffer);
+
+ currentBatch = null;
+ }
+
+ /**
+ * Writes the current (or pending) batch to the log. When the batch is
written
+ * locally, a new snapshot is created in the snapshot registry and the
events
+ * associated with the batch are added to the deferred event queue.
+ */
+ private void writeCurrentBatch() {
+ if (currentBatch != null) {
+ try {
+ // Write the records to the log and update the last
written offset.
+ long offset = partitionWriter.append(
+ tp,
+ currentBatch.verificationGuard,
+ currentBatch.builder.build()
+ );
+ coordinator.updateLastWrittenOffset(offset);
+
+ // Add all the pending deferred events to the deferred
event queue.
+ for (DeferredEvent event : currentBatch.events) {
+ deferredEventQueue.add(offset, event);
+ }
+
+ // Free up the current batch.
+ freeCurrentBatch();
+ } catch (Throwable t) {
+ failCurrentBatch(t);
+ }
+ }
+ }
+
+ /**
+ * Writes the current batch if it is transactional or if it has past
the append linger time.
Review Comment:
nit: "or if its append linger time has passed"
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