zr-hebo opened a new issue #6815:
URL: https://github.com/apache/pulsar/issues/6815
**Describe the bug**
I deployed two pulsar clusters across regions, the RRT between two regions
is 400ms, but each message produced is consumed twice in the same subscription.
**To Reproduce**
Steps to reproduce the behavior:
1. Produce message in one region
```
pulsar-client produce --messages "hahae" my-tenant/my-namespace/hello
```
2. consume message from the other region
```
pulsar-client consume my-tenant/my-namespace/hello --subscription-name haha
--num-messages 0
```
3. See error
```
11:49:23.836 [pulsar-client-io-1-1] INFO
com.scurrilous.circe.checksum.Crc32cIntChecksum - SSE4.2 CRC32C provider
initialized
----- got message -----
hahae
----- got message -----
hahae
```
**Expected behavior**
I expect only one message
```
----- got message -----
hahae
```
**Desktop:**
- OS: Linux 3.10.0-1062.4.1.el7.x86_64
**Additional context**
configuration-store: apache-zookeeper-3.6.0
apache-pulsar-2.5.0
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