Re: Discussing negative acknowledgment in batch default behavior

[Asaf Mesika]

Resurfacing this as it seems (to me) an important correction to be made.

Would love your opinions on this.

Thanks!

Asaf

On Wed, May 11, 2022 at 1:16 PM Asaf Mesika  wrote:

> Hello all,
>
> I have a question regarding a feature introduced in 2.6.0 called Negative
> Acknowledgement in Batch Level index, described in PIP-54
> 
> .
>
> In short: Before this feature, if you would write in batches (in producer)
> to Pulsar (which makes sense most would for performance reasons), then a
> consumer sending a negative acknowledgment for 1 message in the batch (say
> we have 500 in a single batch), would cause the consumer to get the all
> messages in the batch (500) redelivered as if they were not acknowledge.
>
> PIP-54 fixes that by keeping the ack per message in a batch using a bitmap
> index. The caveats are more memory consumption since the broker keeps those
> bitmaps in-memory for any inflight batch.
>
> With PIP-54 Pulsar IMO becomes "complete" in that it acts the way you
> would expect it to be, in normal circumstances (as opposed to disconnects,
> machine crashing, etc).
>
> This feature was introduced in 2.6.0, roughly 2 years ago, and is off by
> default.
>
> I was wondering what the developers community thoughts on turning it on by
> default? Has anyone experienced any performance degradation to it? Have you
> turned it on in your clusters?
>
> Thanks a lot for your time.
>
> Asaf Mesika
>

[GitHub] [pulsar-site] urfreespace commented on pull request #90: Make Algolia DocSearch configuration simple

[GitBox]

urfreespace commented on PR #90:
URL: https://github.com/apache/pulsar-site/pull/90#issuecomment-1134084279

   thanks a lot for @dave2wave 


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[GitHub] [pulsar-site] urfreespace merged pull request #90: Make Algolia DocSearch configuration simple

[GitBox]

urfreespace merged PR #90:
URL: https://github.com/apache/pulsar-site/pull/90


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Re: [DISCUSS] Apache Pulsar 2.10.1 release

[Hang Chen]

+1

There are a lot of transaction fixes.

Thanks,
Hang

PengHui Li  于2022年5月21日周六 13:06写道：
>
> Hello, Pulsar community:
>
> I'd like to propose to release Apache Pulsar 2.10.1
>
> Currently, we have 190 commits [0] and there are many transaction
> fixes, security fixes.
>
> And there are 22 open PRs [1], I will follow them to make sure that
> the important fixes could be contained in 2.10.1
>
> If you have any important fixes or any questions,
> please reply to this email, we will evaluate whether to
> include it in 2.10.1
>
> [0]
> https://github.com/apache/pulsar/pulls?q=is%3Amerged+is%3Apr+label%3Arelease%2F2.10.1+
> [1]
> https://github.com/apache/pulsar/pulls?q=is%3Aopen+is%3Apr+label%3Arelease%2F2.10.1+
>
> Best Regards
> Penghui

[GitHub] [pulsar-client-node] massakam commented on pull request #215: prevent double callback segfault in client close

[GitBox]

massakam commented on PR #215:
URL: 
https://github.com/apache/pulsar-client-node/pull/215#issuecomment-1134166187

   If https://github.com/apache/pulsar/pull/15508 fundamentally solves this 
issue, I think it's enough to raise the minimum version of the C++ client 
required by the Node.js client by the next release. I don't think it's 
necessary to merge this workaround.


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