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#
# Bug #29846292 ROLLBACK OF BIG TRANSACTION DUE TO CONFLICT REMAINS IN HUNG STATE
#
--source include/have_debug.inc
--source include/have_innodb_16k.inc
# Valgrind can hang or return spurious messages on DBUG_SUICIDE
--source include/not_valgrind.inc
SET GLOBAL innodb_compression_level = 0;
CREATE TABLE t1 (j1 JSON) ENGINE=InnoDB ROW_FORMAT=compressed;
SHOW CREATE TABLE t1;
# must be long enough to force external storage
SET @long_str = REPEAT('abcdefghijklmnopqrstuvwxyz1234', 60006);
# must be long enough to force new version (as opposed to storing diff in the undo log),
# but must be short enough to not cause complete rewrite of the blob
SET @medium_str_1 = REPEAT('a', 200);
SET @medium_str_2 = REPEAT('b', 200);
SET @json_doc = CONCAT('["', @long_str, '","', @medium_str_1 ,'" ]');
INSERT INTO t1 (j1) VALUES (@json_doc);
SELECT JSON_EXTRACT(j1, '$[1]') FROM t1;
START TRANSACTION;
UPDATE t1 SET j1 = JSON_REPLACE(j1, '$[1]', @medium_str_2);
SELECT JSON_EXTRACT(j1, '$[1]') FROM t1;
SET DEBUG = '+d,crash_middle_of_lob_rollback_6';
--source include/expect_crash.inc
--error CR_SERVER_LOST
ROLLBACK;
--echo # Verify that before the crash, we HAVE NOT reached 7-th iteration
let SEARCH_FILE= $MYSQLTEST_VARDIR/log/mysqld.1.err;
let SEARCH_PATTERN= Rolling back LOB for transaction \d+ undo number \d+ : current index length \d+\. \(iteration 7\);
--source include/search_pattern.inc
--source include/start_mysqld.inc
SELECT JSON_EXTRACT(j1, '$[1]') FROM t1 FOR UPDATE;
DROP TABLE t1;
SET GLOBAL innodb_compression_level = default;
--echo # Verify that after the restart, we HAVE reached 7-th iteration
--source include/search_pattern.inc
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