It makes sense
> 2023年2月20日 17:32，Zike Yang <z...@apache.org> 写道：
>
> Hi, Jiuming,
>
> Overall looks good to me. Left some comments for the Compatibility section:
>
>> In the next release after 2.11.1, if users want to create Durable
>> subscriptions on NonPersistentTopic, will throw an exception.
>
> I think this is an improvement but not a bug fix. Right?
> The next feature release is 3.0.0. I think we should print warn logs
> in 3.0.0 and throw exceptions may be in 3.1.0. Otherwise, it will
> bring the breaking change here in 3.0.0.
> The 2.11.1 is a patch release. I don't recommend cherry-picking this
> PIP to branch-2.11 because it's not a critical bug fix.
>
> BR,
> Zike Yang
>
>
> Zike Yang
>
> On Fri, Feb 17, 2023 at 12:52 AM Baodi Shi <ba...@apache.org> wrote:
>>
>> +1 (non-binding)
>>
>> Thanks,
>> Baodi Shi
>>
>>
>> 在 2023年2月16日 21:44:17 上，Asaf Mesika <asaf.mes...@gmail.com> 写道：
>>
>>> +1 (non-binding)
>>>
>>>
>>> On Thu, Feb 16, 2023 at 11:11 AM Jiuming Tao <jm...@streamnative.io.invalid
>>>>
>>> wrote:
>>>
>>>
>>> I’ve added the `Compatibility` selection into the PIP, please help review
>>>
>>> and vote the PIP
>>>
>>>
>>> Thanks,
>>>
>>> Tao Jiuming
>>>
>>>
>>>
>>>
>>>> 2023年2月15日 14:58，Zike Yang <z...@apache.org> 写道：
>>>
>>>>
>>>
>>>> Hi, Jiuming
>>>
>>>>
>>>
>>>>> bump
>>>
>>>>
>>>
>>>> As for the discussion here[0], could you add a `Compatibility` section
>>>
>>>> to talk about compatibility in more detail? WDYT?
>>>
>>>> Then we could start the vote again.
>>>
>>>>
>>>
>>>> [0] https://lists.apache.org/thread/2bjg39zh7z38bzbnqngbo5l4jzkjttrq
>>>
>>>>
>>>
>>>> Thanks,
>>>
>>>> Zike Yang
>>>
>>>>
>>>
>>>> On Wed, Feb 15, 2023 at 1:34 PM Tao Jiuming <dao...@apache.org> wrote:
>>>
>>>>>
>>>
>>>>>
>>>
>>>>> bump
>>>
>>>>>
>>>
>>>>> On 2023/02/13 06:56:09 Jiuming Tao wrote:
>>>
>>>>>> Hi all,
>>>
>>>>>>
>>>
>>>>>> I would like to start a VOTE on `PIP-245: Make subscriptions of
>>>
>>> non-persistent topic non-durable`.
>>>
>>>>>>
>>>
>>>>>> Motivation:
>>>
>>>>>>
>>>
>>>>>> There are two types of subscriptions for a topic: Durable and
>>>
>>> Non-durable.
>>>
>>>>>>
>>>
>>>>>> We create a Consumer with a Durable subscription and a Reader with a
>>>
>>> Non-durable subscription.
>>>
>>>>>>
>>>
>>>>>> But for NonPersistentTopic, creating a Durable subscription is
>>>
>>> meaningless, NonPersistentSubscription doesn't have a ManagedCursor to
>>>
>>> persistent its data. After its consumer disconnected, the subscription
>>>
>>> couldn't be removed automatically if we didn't set the value of
>>>
>>> subscriptionExpirationTimeMinutes greater than 0.
>>>
>>>>>>
>>>
>>>>>> For subscriptionExpirationTimeMinutes, it controls the subscription
>>>
>>> expiration of NonPersistentTopic and PersistentTopic, if we set the value
>>>
>>> of subscriptionExpirationTimeMinutes greater than 0, it may lead to data
>>>
>>> loss(The durable subscriptions of PersistentTopic also can be removed).
>>>
>>>>>>
>>>
>>>>>> And the Non-durable subscriptions will be removed automatically after
>>>
>>> all the consumers disconnected, it's the existing logic.
>>>
>>>>>>
>>>
>>>>>> For the purpose of removing the subscriptions which have no active
>>>
>>> consumers of NonPersistentTopic and the above reasons, we can make all the
>>>
>>> subscriptions of a NonPersistentTopic Non-durable.
>>>
>>>>>>
>>>
>>>>>>
>>>
>>>>>>
>>>
>>>>>> For more details, you can read:
>>>
>>> https://github.com/apache/pulsar/issues/19448 <
>>>
>>> https://github.com/apache/pulsar/issues/19448>
>>>
>>>>>>
>>>
>>>>>> And the discuss thread is available at:
>>>
>>> https://lists.apache.org/thread/2ltmyglnb25jy8nk58twkwbglws43bst <
>>>
>>> https://lists.apache.org/thread/2ltmyglnb25jy8nk58twkwbglws43bst>
>>>
>>>>>>
>>>
>>>>>> Thanks,
>>>
>>>>>> Tao Jiuming
>>>
>>>
>>>
>>>
