RE: Truncate in synchronous logical replication failed

Hi

On Friday, April 16, 2021 5:50 PM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> On Fri, Apr 16, 2021 at 12:56 PM osumi(dot)takamichi(at)fujitsu(dot)com
> <osumi(dot)takamichi(at)fujitsu(dot)com> wrote:
> >
> > > Thanks for your reminder. It might be a way to solve this problem.
> > Yeah. I've made the 1st patch for this issue.
> >
> > In my env, with the patch
> > the TRUNCATE in synchronous logical replication doesn't hang.
> >
>
> Few initial comments:
> =====================
> 1.
> + relreplindex = relation->rd_replidindex;
> +
> + /*
> + * build attributes to idindexattrs.
> + */
> + idindexattrs = NULL;
> + foreach(l, indexoidlist)
> + {
> + Oid indexOid = lfirst_oid(l);
> + Relation indexDesc;
> + int i;
> + bool isIDKey; /* replica identity index */
> +
> + indexDesc = RelationIdGetRelation(indexOid);
>
> When you have oid of replica identity index (relreplindex) then what is the
> need to traverse all the indexes?
Ok. No need to traverse all the indexes. Will fix this part.

> 2.
> It is better to name the function as RelationGet...
You are right. I'll modify this in my next version.

Best Regards,
Takamichi Osumi