equanz commented on PR #18254:
URL: https://github.com/apache/pulsar/pull/18254#issuecomment-1311168182
For example, when enabling `aggregatePublisherStatsByProducerName` in the
v2.10.1 server
```
% grep 'aggregatePublisherStatsByProducerName' conf/standalone.conf
aggregatePublisherStatsByProducerName=true
```
and create the partitioned producer to the partitioned topic by the v2.8.4
client,
```
./bin/pulsar-perf produce -r 1 -s 10 persistent://public/default/pt
...
11:28:34.053 [main] INFO org.apache.pulsar.testclient.PerformanceProducer -
Starting Pulsar perf producer with config: {
...
"producerName" : null,
...
11:28:34.969 [pulsar-client-io-2-1] INFO
org.apache.pulsar.client.impl.ProducerImpl -
[persistent://public/default/pt-partition-0] [standalone-0-1] Created producer
on cnx [id: 0x0e5ab2e4, L:/127.0.0.1:49990 - R:localhost/127.0.0.1:6650]
11:28:34.992 [pulsar-client-io-2-1] INFO
org.apache.pulsar.client.impl.ProducerImpl -
[persistent://public/default/pt-partition-1] [standalone-0-0] Created producer
on cnx [id: 0x32a3290d, L:/127.0.0.1:49989 - R:localhost/127.0.0.1:6650]
...
```
then the broker returns partitioned topic stats like the one below.
```
% ./bin/pulsar-admin topics partitioned-stats persistent://public/default/pt
...
"publishers" : [ {
"msgRateIn" : 0.0,
"msgThroughputIn" : 0.0,
"averageMsgSize" : 0.0,
"chunkedMessageRate" : 0.0,
"producerId" : 0,
"supportsPartialProducer" : false
} ],
...
```
However, when running with your fixes on the server side and creating a
producer to a partitioned topic by the v2.8.4 client,
```
% ./bin/pulsar-perf produce -r 1 -s 10 persistent://public/default/pt
...
"producerName" : null,
...
11:30:37.289 [pulsar-client-io-2-1] INFO
org.apache.pulsar.client.impl.ProducerImpl -
[persistent://public/default/pt-partition-1] [standalone-0-1] Created producer
on cnx [id: 0x393b0652, L:/127.0.0.1:50035 - R:localhost/127.0.0.1:6650]
11:30:37.307 [pulsar-client-io-2-1] INFO
org.apache.pulsar.client.impl.ProducerImpl -
[persistent://public/default/pt-partition-0] [standalone-0-0] Created producer
on cnx [id: 0x9b73aa95, L:/127.0.0.1:50034 - R:localhost/127.0.0.1:6650]
...
```
then the broker returns partitioned topic stats like the one below. As you
can see, publishers can't be aggregated by producerName even if the partitioned
producer is alone in the partitioned topic. It is breaking changes. Is it
allowed on this project?
```
% ./bin/pulsar-admin topics partitioned-stats persistent://public/default/pt
...
"publishers" : [ {
"msgRateIn" : 0.0,
"msgThroughputIn" : 0.0,
"averageMsgSize" : 0.0,
"chunkedMessageRate" : 0.0,
"producerId" : 0,
"supportsPartialProducer" : true,
"producerName" : "standalone-0-1"
}, {
"msgRateIn" : 0.0,
"msgThroughputIn" : 0.0,
"averageMsgSize" : 0.0,
"chunkedMessageRate" : 0.0,
"producerId" : 0,
"supportsPartialProducer" : true,
"producerName" : "standalone-0-0"
} ],
...
```
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