Hi Yong,

Ok, sounds good since this flag is not intentional for Pulsar users.

Regards,
Penghui

On Sat, Feb 28, 2026 at 12:37 AM Yong Zhang <[email protected]>
wrote:

> Thanks for the review.
>
> At beginning, I also wanted to change from the RawReader side, but I
> noticed
> that needs to change the CommandSubscription, so it looks a bit complex.
>
> I review the code again. Would it be possible to reuse the
> subscriptionProperties
> to bring a config, like a boolean value named `readingMarker`, to do it?
> Then we can only add an api `enableReadingMarker` to allow this behavior.
>
> What do you think?
>
> On Sat, Feb 28, 2026 at 2:20 AM PengHui Li <[email protected]> wrote:
>
> > Hi Yong,
> >
> > Thanks for driving this proposal.
> >
> > Could we add an option to the `RawReader` API, such as a `boolean
> > includingMarkers` flag, when creating the `RawReader`?
> >
> > From a Pulsar perspective, there are two groups of people:
> > - Users who manage applications for publishing and consuming.
> > - Pulsar operators and maintainers.
> >
> > The major issue with broker-level configuration is that operators or
> > maintainers must manage the setting,
> >  even though they may not know how users will define their subscriptions.
> >
> > We don't need to change the existing API; we can simply add a new method
> to
> > create a RawReader with the new option.
> > RawReader is a low-level API that is rarely used in standard scenarios.
> >
> > Regards,
> > Penghui
> >
> >
> > On Thu, Feb 26, 2026 at 7:58 PM Yong Zhang <[email protected]>
> > wrote:
> >
> > > Hi all,
> > >
> > > When using RawReader to read messages for specific use cases like:
> > > - Compaction verification and monitoring
> > > - Custom data analysis pipelines
> > > - Debugging and troubleshooting
> > >
> > > Users want to read **all** messages from the topic, including marker
> > > messages, so they can handle marker types on the reader side.
> Currently,
> > > the broker filters out these marker messages before delivering them to
> > any
> > > consumer, including RawReader.
> > >
> > > This feature is particularly useful for:
> > > 1. **Compaction monitoring**: Users want to verify compaction results
> by
> > > reading all marker messages
> > > 2. **Custom processing**: Users need access to all message types for
> > their
> > > specific use cases
> > > 3. **Debugging**: Developers need to inspect marker messages for
> > > troubleshooting
> > >
> > >
> > > This proposal allows us to configure a subscription prefix to allow the
> > > specific readers to read all the data from the topic.
> > >
> > > Here is the proposal: https://github.com/apache/pulsar/pull/25270
> > >
> > > Please let me know if you have any questions.
> > >
> > > Best,
> > > Yong
> > >
> >
>

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