Re: Parallel index build for BRIN

On 16.12.2024 21:24, Tomas Vondra wrote:

> On 12/9/24 19:54, Tomas Vondra wrote:
>> On 12/8/24 16:00, Egor Rogov wrote:
>>> Hi,
>>>
>>> ...
>>>
>>> I've spotted another mention of B-tree being the only AM that supports
>>> parallel builds: comment in src/backend/catalog/index.c. As this mention
>>> is not visible to the users, I'd propose removing it altogether rather
>>> than fixing it. Updated patch is attached.
>>>
>> Thanks for noticing this and the patches. You're right, this should have
>> been updated with the BRIN parallel builds. I'll get this committed
>> sometime the week.
>>
> I've pushed the doc fix, and backpatched it to PG 17.


Thanks so much, Tomas!

Please note that the comment in src/backend/catalog/index.c remains 
unchanged:


--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -2988,8 +2988,7 @@ index_build(Relation heapRelation,
Assert(PointerIsValid(indexRelation->rd_indam->ambuildempty));

     /*
-    * Determine worker process details for parallel CREATE INDEX.  
Currently,
-    * only btree has support for parallel builds.
+    * Determine worker process details for parallel CREATE INDEX.
      *
      * Note that planner considers parallel safety for us.
      */