Hi Penghui > Do we have a workaround for this break change? > Is disabling PIP-145 can help with it?
Enabled `enableBrokerSideSubscriptionPatternEvaluation` and setting `patternAutoDiscoveryPeriod` to a little value may solve the problem. Thanks Yubiao Feng On Mon, Jan 15, 2024 at 10:03 AM PengHui Li <peng...@apache.org> wrote: > Do we have a workaround for this break change? > Is disabling PIP-145 can help with it? > > Regards, > Penghui > > On Fri, Jan 12, 2024 at 6:29 PM Yubiao Feng > <yubiao.f...@streamnative.io.invalid> wrote: > > > Hi all > > > > I noticed that the PIP-145 made a break change that caused clients to not > > subscribe to partitioned topics with a suffix-matched regexp. > > > > ### Background > > PIP-145(https://github.com/apache/pulsar/issues/14505) moved the logic > of > > regexp compare from client-side to the broker-side. > > After PIP-145, Pulsar uses the partition name(E.g., "topic-partition-0") > to > > match the Regexp. But the original behavior is to use a partitioned topic > > name(E.g., "topic") to match the Regexp. > > > > ### The behavior change 1 > > - start a consumer with `topicPattern`: > > `persistent://my-property/my-ns/pattern-.*-1` > > - create a partitioned topic > `persistent://my-tenant/my-ns/pattern-topic-x` > > with `4` partitions > > > > `3.0.2`: the consumer will automatically add `4` internal consumers for > the > > `4` partitions. > > `2.10.5`: No internal consumers added. > > > > ### The behavior change 2 > > - start a consumer with regexp `persistent://public/default/tp$` > > - create a partitioned topic persistent://public/default/tp` with `4` > > partitions > > > > `3.0.2`: the pattern consumer has no internal consumers. > > `2.10.5`: the consumer will automatically add `4` internal consumers for > > the `4` partitions. > > > > ### Summary > > After PIP-145, there are two behaviors are confused: > > - You can not use a suffix-regexp to subscribe to the partitioned topics. > > - You will get all partitions if you just want one partition with a > > suffix-regexp `-partition-0`. And before PIP-145, you will get no topics. > > This behavior is not supported on all versions, but the behavior is not > the > > same. > > > > ### Fix > > I pushed a PR to revert the behavior to the original(before PIP-145). > See: > > https://github.com/apache/pulsar/pull/21885. > > > > > > Thanks > > Yubiao Femg > > >
