[VOTE] PIP-286: Make the TopicCompactionService to support find entry based on publishTime or index

[Cong Zhao]

Hi, all

Since there are no other concerns in the discussion, I'm delighted to
start the voting process for the PIP-286.

Here is the link to the PIP: https://github.com/apache/pulsar/pull/20867

Thanks,
Cong Zhao

[DISCUSS] Cherry-pick the tool method `Servercnx.checkConnectionLiveness` into branch-2.10 and branch-2.11

[Yubiao Feng]

Hi all

The PR https://github.com/apache/pulsar/pull/21155 fixes an issue in which
the producer sends messages timeout due to the inability to reconnect
successfully. The root cause is the client created a new connection to
reregister the producer after it assumed the old client was invalidated,
but at the same time, the broker assumed the old connection was still
validated, so the client got an error "Producer with name 'st-0-5' is
already connected to topic".

The fix in the PR https://github.com/apache/pulsar/pull/21155 tries to
start a new heartbeat after the broker receives different connections for
the same producer registration.

In this fix, the PR https://github.com/apache/pulsar/pull/21155 uses a tool
method `Servercnx.checkConnectionLiveness`( introduced in the PR
https://github.com/apache/pulsar/pull/20026).

I want to cherry-pick the tool method `Servercnx.checkConnectionLiveness`
into branch-2.10 and branch-2.11 along with the PR #21155


Thanks
Yubiao Feng