Hi,

On Mon, Mar 15, 2021 at 1:18 PM Peter Geoghegan <p...@bowt.ie> wrote:

> On Mon, Mar 15, 2021 at 6:56 AM Avinash Kumar
> <avinash.vallar...@gmail.com> wrote:
> > psql:amchecksql.sql:17: DEBUG:  leaf block 1043751 of index
> "idx_id_mtime" has no first data item
>
> That one is harmless.
>
> > And one error as follows.
> >
> > psql:amchecksql.sql:17: ERROR:  down-link lower bound invariant violated
> for index "some_other_index"
>
> That indicates corruption. Can you tie this back to the crash? Is it
> the same index?
>
No, that's not the same index.  The Index discussed in the previous
messages shows the following output.

DEBUG:  verifying consistency of tree structure for index "idx_id_mtime"
with cross-level checks
DEBUG:  verifying level 2 (true root level)
DEBUG:  verifying level 1
DEBUG:  verifying level 0 (leaf level)
DEBUG:  verifying that tuples from index "idx_id_mtime" are present in
"player"
DEBUG:  finished verifying presence of 1966412 tuples from table "player"
with bitset 29.89% set
LOG:  duration: 3341.755 ms  statement: SELECT bt_index_parent_check(index
=> c.oid, heapallindexed => true), c.relname, c.relpages FROM pg_index i
JOIN pg_opclass op ON i.indclass[0] = op.oid JOIN pg_am am ON op.opcmethod
= am.oid JOIN pg_class c ON i.indexrelid = c.oid JOIN pg_namespace n ON
c.relnamespace = n.oid WHERE am.amname = 'btree' AND c.relpersistence !=
't' AND c.relkind = 'i' AND i.indisready AND i.indisvalid AND indexrelid =
80774 AND n.nspname = 'public' ORDER BY c.relpages DESC;
 bt_index_parent_check |     relname     | relpages
-----------------------+-----------------+----------
                       | idx_id_mtime |     8439
(1 row)


> --
> Peter Geoghegan
>


-- 
Regards,
Avi.

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