definition of CalculateMaxmumSafeLSN

Started by Sergei Kornilovabout 4 years ago5 messageshackers
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Hello
I just spotted in src/include/access/xlog.h:
extern XLogRecPtr CalculateMaxmumSafeLSN(void);

This function doesn't seem to be used anywhere or even defined? "git grep CalculateMaxmumSafeLSN" shows only this line.
Was added in c6550776394e25c1620bc8258427c8f1d448080d "Allow users to limit storage reserved by replication slots"

regards, Sergei

#2Kyotaro Horiguchi
horikyota.ntt@gmail.com
In reply to: Sergei Kornilov (#1)
Re: definition of CalculateMaxmumSafeLSN

At Mon, 28 Feb 2022 17:01:10 +0300, Sergei Kornilov <sk@zsrv.org> wrote in

Hello
I just spotted in src/include/access/xlog.h:
extern XLogRecPtr CalculateMaxmumSafeLSN(void);

This function doesn't seem to be used anywhere or even defined? "git grep CalculateMaxmumSafeLSN" shows only this line.
Was added in c6550776394e25c1620bc8258427c8f1d448080d "Allow users to limit storage reserved by replication slots"

Hmm. I think I remember of that name. You're right, it is a function
that was once added during development of the commit but eventually
gone.

So it should be removed.

regards.

--
Kyotaro Horiguchi
NTT Open Source Software Center

#3Julien Rouhaud
rjuju123@gmail.com
In reply to: Kyotaro Horiguchi (#2)
Re: definition of CalculateMaxmumSafeLSN

Hi,

On Tue, Mar 01, 2022 at 10:11:03AM +0900, Kyotaro Horiguchi wrote:

At Mon, 28 Feb 2022 17:01:10 +0300, Sergei Kornilov <sk@zsrv.org> wrote in

Hello
I just spotted in src/include/access/xlog.h:
extern XLogRecPtr CalculateMaxmumSafeLSN(void);

This function doesn't seem to be used anywhere or even defined? "git grep CalculateMaxmumSafeLSN" shows only this line.
Was added in c6550776394e25c1620bc8258427c8f1d448080d "Allow users to limit storage reserved by replication slots"

Hmm. I think I remember of that name. You're right, it is a function
that was once added during development of the commit but eventually
gone.

So it should be removed.

+1. I'm Ccing �lvaro as he's the committer.

#4Bharath Rupireddy
bharath.rupireddyforpostgres@gmail.com
In reply to: Sergei Kornilov (#1)
Re: definition of CalculateMaxmumSafeLSN

On Mon, Feb 28, 2022 at 7:31 PM Sergei Kornilov <sk@zsrv.org> wrote:

Hello
I just spotted in src/include/access/xlog.h:
extern XLogRecPtr CalculateMaxmumSafeLSN(void);

This function doesn't seem to be used anywhere or even defined? "git grep CalculateMaxmumSafeLSN" shows only this line.
Was added in c6550776394e25c1620bc8258427c8f1d448080d "Allow users to limit storage reserved by replication slots"

+1 to remove. Although the change is straightforward, I attached the
patch just for the sake of convention. I've marked it as RfC
https://commitfest.postgresql.org/38/3616/.

Just for the record - there's another thread
/messages/by-id/CALj2ACVoQ7NEf43Xz0rfxsGOKYTN5r4VZp2DO2_5p+CMzsRPFw@mail.gmail.com

Regards,
Bharath Rupireddy.

Attachments:

v1-0001-Remove-an-undefined-function-CalculateMaxmumSafeL.patchapplication/octet-stream; name=v1-0001-Remove-an-undefined-function-CalculateMaxmumSafeL.patchDownload+0-2
#5Tom Lane
tgl@sss.pgh.pa.us
In reply to: Bharath Rupireddy (#4)
Re: definition of CalculateMaxmumSafeLSN

Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com> writes:

On Mon, Feb 28, 2022 at 7:31 PM Sergei Kornilov <sk@zsrv.org> wrote:

I just spotted in src/include/access/xlog.h:
extern XLogRecPtr CalculateMaxmumSafeLSN(void);
This function doesn't seem to be used anywhere or even defined? "git grep CalculateMaxmumSafeLSN" shows only this line.

+1 to remove.

Right, done.

regards, tom lane