MichalKoziorowski-TomTom opened a new issue #10717:
URL: https://github.com/apache/pulsar/issues/10717
**Describe the bug**
After upgrading java client to 2.7.2 version we started to notice following
logs:
```
2021-05-26 18:00:39.236 ERROR 11646 --- [r-client-io-1-1]
o.a.p.c.impl.MultiTopicsConsumerImpl :
[persistent://public/batch/embedded_ROUTING1_bdcccf7eeaec7f5e0e7d243451433ac2ae8506d4]
not support shrink topic partitions. old: 1, new: 0
2021-05-26 18:00:39.237 WARN 11646 --- [r-client-io-1-1]
o.a.p.c.impl.MultiTopicsConsumerImpl : [MultiTopicsConsumer-f03d6] Failed
to subscribe increased topics partitions:
org.apache.pulsar.client.api.PulsarClientException$NotSupportedException: not
support shrink topic partitions
```
This happens couple of minutes of not pushing new messages to listened topic.
Another consequence of that are exceptions when trying to ack message that
was in progress coming from that consumer:
```
org.apache.pulsar.client.api.PulsarClientException$InvalidMessageException:
null
at
org.apache.pulsar.client.impl.ConsumerBase.acknowledgeAsync(ConsumerBase.java:373)
```
**Expected behavior**
There should be no errors.
**Additional context**
After upgrading server and java client to 2.7.2 version, but it's problem in
java client.
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