Re: ERROR: unexpected chunk number 0 (expected 1) for toast value 76753264 in pg_toast_10920100

Hi,

pls tell me, I am currently running 2nd run in my box, (New attempt 2), and
> its in the "Attempting vacuum" phase.
> What is it supposed to do next?
> I got no errors , it has gotten my machine to its knees.
>

The jar has an endless while loop. Thus please kill the PID when you are
done testing. It loosely follows the following:

BEGIN;
CREATE TABLE x (id BIGSERIAL PRIMARY KEY, payload1 VARCHAR, payload2
VARCHAR, payload3 VARCHAR, payload4 BIGINT, payload5 BIGINT);
/* Repeat until 2,000,000 rows are inserted */
INSERT INTO x (id, payload1, payload2, payload3, payload4, payload5) VALUES
(random values of varying length/size to force random toast usage);
COMMIT;

VACUUM (ANALYZE, FULL);

BEGIN;
/* Repeat until all 2,000,000 rows are updated */
UPDATE x SET payload1 = , payload2 = , payload3 = , payload4 = , payload5 =
... again random values of varying length/size to force random toast usage
COMMIT;

VACCUM (ANALYZE, FULL);

If the error is going to occur it will happen during the second "Attempting
vacuum" phase.

1st vacuum:

c.setAutoCommit(true);

System.out.println("Attempting vacuum");

c.prepareCall("VACUUM (FULL, ANALYZE, VERBOSE) x").execute();

System.out.println("Vacuum end. 30 sec sleep");

Thread.sleep(60000);

2nd vacuum:

System.out.println("Attempting vacuum");

c.prepareCall("VACUUM (FULL, ANALYZE, VERBOSE) x").execute();

System.out.println("Vacuum completed");

Thread.sleep(30000);

System.out.println("Dropping the table");

c.createStatement().execute("drop table if exists x");

Thread.sleep(30000);

Hope this helps!

Best wishes,
Harry