[GitHub] [incubator-pulsar] massakam commented on issue #2401: Consumer often discards received messages

["massakam (GitHub)" <gi...@apache.org>]

@ivankelly
> Do you have a reliable repro, or do you just see it happening regularly in production?

In our environment, it can be reproduced by using the [OpenMessaging benchmark tool](https://github.com/openmessaging/openmessaging-benchmark) and applying the following load:
```
topics: 1
partitionsPerTopic: 1
messageSize: 1024
payloadFile: "payload/payload-1Kb.data"
subscriptionsPerTopic: 100
producersPerTopic: 1
producerRate: 1000
consumerBacklogSizeGB: 0
testDurationMinutes: 2
```
It seems that it tends to occur when there are many subscriptions. It also occurred several times in production.

> Is TLS auth enabled, or just TLS transport?

We are not using TLS auth.

[ Full content available at: https://github.com/apache/incubator-pulsar/issues/2401 ]
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