poorbarcode commented on code in PR #17443:
URL: https://github.com/apache/pulsar/pull/17443#discussion_r969114272
##########
pulsar-client/src/main/java/org/apache/pulsar/client/impl/MultiTopicsConsumerImpl.java:
##########
@@ -789,20 +804,31 @@ public CompletableFuture<Void> seekAsync(MessageId
messageId) {
new PulsarClientException("Illegal messageId, messageId
can only be earliest/latest")
);
}
- List<CompletableFuture<Void>> futures = new
ArrayList<>(consumers.size());
- consumers.values().forEach(consumerImpl ->
futures.add(consumerImpl.seekAsync(targetMessageId)));
-
- unAckedMessageTracker.clear();
- clearIncomingMessages();
-
- return FutureUtil.waitForAll(futures);
+ return internalSeekAsync(consumer -> consumer.seekAsync(messageId));
}
@Override
public CompletableFuture<Void> seekAsync(long timestamp) {
- List<CompletableFuture<Void>> futures = new
ArrayList<>(consumers.size());
- consumers.values().forEach(consumer ->
futures.add(consumer.seekAsync(timestamp)));
- return FutureUtil.waitForAll(futures);
+ return internalSeekAsync(consumer -> consumer.seekAsync(timestamp));
+ }
+
+ private CompletableFuture<Void> internalSeekAsync(Function<Consumer,
CompletableFuture<Void>> childSeekFunction) {
+ pause();
+ CompletableFuture<Void> res =
FutureUtil.waitForAll(receiveMessageFutures).thenCompose(__ -> {
Review Comment:
Good suggestion, but we don't have the operability of `cancel`, and the
waiting-event only happens on this scenario: call `seek` multi times quickly,
along with `read`, this is very rare.
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