Re: pg_amcheck contrib application - Mailing list pgsql-hackers

> On Apr 23, 2021, at 10:31 AM, Mark Dilger <mark.dilger@enterprisedb.com> wrote:
>
> I will test your patch and see what differs.

Here are the differences between master and you patch:

UPDATE $toastname SET chunk_seq = chunk_seq + 1000 WHERE chunk_id = $value_id_to_corrupt

-                       qr/${header}toast value 16459 chunk 0 has sequence number 1000, but expected sequence number
0/,
-                       qr/${header}toast value 16459 chunk 1 has sequence number 1001, but expected sequence number
1/,
-                       qr/${header}toast value 16459 chunk 2 has sequence number 1002, but expected sequence number
2/,
-                       qr/${header}toast value 16459 chunk 3 has sequence number 1003, but expected sequence number
3/,
-                       qr/${header}toast value 16459 chunk 4 has sequence number 1004, but expected sequence number
4/,
-                       qr/${header}toast value 16459 chunk 5 has sequence number 1005, but expected sequence number
5/;
+               qr/${header}toast value 16459 index scan returned chunk 1000 when expecting chunk 0/,
+               qr/${header}toast value 16459 chunk 1000 follows last expected chunk 5/,
+               qr/${header}toast value 16459 chunk 1001 follows last expected chunk 5/,
+               qr/${header}toast value 16459 chunk 1002 follows last expected chunk 5/,
+               qr/${header}toast value 16459 chunk 1003 follows last expected chunk 5/,
+               qr/${header}toast value 16459 chunk 1004 follows last expected chunk 5/,
+               qr/${header}toast value 16459 chunk 1005 follows last expected chunk 5/;

UPDATE $toastname SET chunk_seq = chunk_seq * 1000 WHERE chunk_id = $value_id_to_corrupt

-                       qr/${header}toast value $value_id_to_corrupt chunk 1 has sequence number 1000, but expected
sequencenumber 1/, 
-                       qr/${header}toast value $value_id_to_corrupt chunk 2 has sequence number 2000, but expected
sequencenumber 2/, 
-                       qr/${header}toast value $value_id_to_corrupt chunk 3 has sequence number 3000, but expected
sequencenumber 3/, 
-                       qr/${header}toast value $value_id_to_corrupt chunk 4 has sequence number 4000, but expected
sequencenumber 4/, 
-                       qr/${header}toast value $value_id_to_corrupt chunk 5 has sequence number 5000, but expected
sequencenumber 5/; 
-
+               qr/${header}toast value 16460 index scan returned chunk 1000 when expecting chunk 1/,
+               qr/${header}toast value 16460 chunk 1000 follows last expected chunk 5/,
+               qr/${header}toast value 16460 index scan returned chunk 2000 when expecting chunk 1001/,
+               qr/${header}toast value 16460 chunk 2000 follows last expected chunk 5/,
+               qr/${header}toast value 16460 index scan returned chunk 3000 when expecting chunk 2001/,
+               qr/${header}toast value 16460 chunk 3000 follows last expected chunk 5/,
+               qr/${header}toast value 16460 index scan returned chunk 4000 when expecting chunk 3001/,
+               qr/${header}toast value 16460 chunk 4000 follows last expected chunk 5/,
+               qr/${header}toast value 16460 index scan returned chunk 5000 when expecting chunk 4001/,
+               qr/${header}toast value 16460 chunk 5000 follows last expected chunk 5/;

INSERT INTO $toastname (chunk_id, chunk_seq, chunk_data)
    (SELECT chunk_id,
            10*chunk_seq + 1000,
            chunk_data
        FROM $toastname
        WHERE chunk_id = $value_id_to_corrupt)

-                       qr/${header}toast value $value_id_to_corrupt chunk 6 has sequence number 1000, but expected
sequencenumber 6/, 
-                       qr/${header}toast value $value_id_to_corrupt chunk 7 has sequence number 1010, but expected
sequencenumber 7/, 
-                       qr/${header}toast value $value_id_to_corrupt chunk 8 has sequence number 1020, but expected
sequencenumber 8/, 
-                       qr/${header}toast value $value_id_to_corrupt chunk 9 has sequence number 1030, but expected
sequencenumber 9/, 
-                       qr/${header}toast value $value_id_to_corrupt chunk 10 has sequence number 1040, but expected
sequencenumber 10/, 
-                       qr/${header}toast value $value_id_to_corrupt chunk 11 has sequence number 1050, but expected
sequencenumber 11/, 
-                       qr/${header}toast value $value_id_to_corrupt was expected to end at chunk 6, but ended at chunk
12/;
+              qr/${header}toast value $value_id_to_corrupt index scan returned chunk 1000 when expecting chunk 6/,
+              qr/${header}toast value $value_id_to_corrupt chunk 1000 follows last expected chunk 5/,
+              qr/${header}toast value $value_id_to_corrupt index scan returned chunk 1010 when expecting chunk 1001/,
+              qr/${header}toast value $value_id_to_corrupt chunk 1010 follows last expected chunk 5/,
+              qr/${header}toast value $value_id_to_corrupt index scan returned chunk 1020 when expecting chunk 1011/,
+              qr/${header}toast value $value_id_to_corrupt chunk 1020 follows last expected chunk 5/,
+              qr/${header}toast value $value_id_to_corrupt index scan returned chunk 1030 when expecting chunk 1021/,
+              qr/${header}toast value $value_id_to_corrupt chunk 1030 follows last expected chunk 5/,
+              qr/${header}toast value $value_id_to_corrupt index scan returned chunk 1040 when expecting chunk 1031/,
+              qr/${header}toast value $value_id_to_corrupt chunk 1040 follows last expected chunk 5/,
+              qr/${header}toast value $value_id_to_corrupt index scan returned chunk 1050 when expecting chunk 1041/,
+              qr/${header}toast value $value_id_to_corrupt chunk 1050 follows last expected chunk 5/;


—
Mark Dilger
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company