imaffe edited a comment on issue #540:
URL:
https://github.com/apache/rocketmq-externals/issues/540#issuecomment-634828644
WorkerSinkTask#pullMessageFromQueues(), this method can block up to 20
seconds, however the consumer pull timeout is set to 3 seconds, which is very
weird.
1. We need to find out why the actual timeout is not the same as the default
value, we can do this by adding a try catch block.
```
log.info("START pullBlockIfNotFound, time started : {}",
System.currentTimeMillis());
// TODO this method blocked longer than expected
final PullResult pullResult =
consumer.pullBlockIfNotFound(entry.getKey(), "*", entry.getValue(),
MAX_MESSAGE_NUM);
long currentTime = System.currentTimeMillis();
log.info("INSIDE pullMessageFromQueues, time elapsed : {}",
currentTime - startTimeStamp);
```
However as I observe the pullResult actually executed for 20 seconds, we
need to check why that is happening.
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