File: zlob_rollback_problem_mini.test

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#
# Bug #30258536 DEADLOCK BETWEEN LOB::ALLOC_LOB_PAGE AND ROW_UNDO_MOD_CLUST_LOW
#
# This scenario is for regression caused by fix for
# Bug #30178056 .IBD FILE GROWS INDEFINITELY FOR TABLES WITH BLOB COLUMNS
# which introduced an operation which latches first page during ROLLBACK,
# that leads to a failure of the assertion introduced in
# Bug #27777959	INNODB: ASSERTION FAILURE: UT0UT.CC DUE TO DEADLOCK AT FSP_PAGE_CREATE()
# which states that the first page of zLOB should not be latched during lob::z_rollback
#
--source include/have_innodb_16k.inc
SET GLOBAL innodb_compression_level = 0;

CREATE TABLE t1 (
  id INT PRIMARY KEY,
  val LONGBLOB
) ENGINE=InnoDB ROW_FORMAT=compressed;
INSERT INTO t1 (id,val) VALUES (1,REPEAT('a',13));

BEGIN;
UPDATE t1 SET val = REPEAT('b',1000000) WHERE id=1;
ROLLBACK;

DROP TABLE t1;
SET GLOBAL innodb_compression_level = default;