> On Oct 4, 2021, at 6:19 PM, Peter Geoghegan <pg@bowt.ie> wrote:
>
> I don't see what the point of this example is.
It doesn't matter.
I am changing pg_amcheck to filter out indexes as you say. Since the btree check should no longer error in these
cases,the issue of pg_amcheck exit(2) sorts itself out without further code changes.
I am changing verify_heapam to skip unlogged tables during recovery. In testing, checking such a table results in a
simplenotice:
NOTICE: cannot verify unlogged relation "u_tbl" during recovery, skipping
While testing, I also created an index on the unlogged table and checked that index using bt_index_parent_check, and
wassurprised that checking it using bt_index_parent_check raises an error:
ERROR: cannot acquire lock mode ShareLock on database objects while recovery is in progress
HINT: Only RowExclusiveLock or less can be acquired on database objects during recovery.
It doesn't get as far as btree_index_mainfork_expected(). So I am changing pg_amcheck to filter out indexes when
pg_is_in_recovery()is true and relpersistence='u'. Does that sound right to you?
—
Mark Dilger
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company