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#
# Bug#32469090 FAILURE TO FIND BLOBPARTS NOT HANDLED
# - Use DBUG to insert error while processing INSERT, UPDATE
# and DELETE events on a table with blobs. The binlog thread will
# restart and write a LOST_EVENTS to the binlog.
#
CREATE TABLE t1 (
a int primary key,
b blob,
c text
) ENGINE = NDB;
RESET MASTER;
set @save_debug = @@global.debug;
set @@global.debug = '+d,ndb_event_fail_read_blob_parts';
# Create and drop dummy table to activate DBUG in binlog thread
CREATE TABLE dummy (a int primary key) ENGINE = NDB;
DROP TABLE dummy;
# Perform INSERT with blob large enough to trigger reading
# blob parts and thus event will fail to be processed
INSERT INTO t1 VALUES (37, REPEAT("MySQL", 256),
REPEAT("Cluster", 1024));
# mysqld1: Wait until ready again...
set @@global.debug = @save_debug;
# Check that LOST_EVENTS event was written to the binlog for
# INSERT and UPDATE. The DELETE should have a normal log entry.
include/show_binlog_events.inc
Log_name Pos Event_type Server_id End_log_pos Info
binlog.000001 # Query # # use `test`; CREATE TABLE dummy (a int primary key) ENGINE = NDB
binlog.000001 # Query # # use `test`; DROP TABLE `dummy` /* generated by server */
binlog.000001 # Incident # # #1 (LOST_EVENTS)
binlog.000001 # Rotate # # binlog.000002;pos=POS
RESET MASTER;
set @save_debug = @@global.debug;
set @@global.debug = '+d,ndb_event_fail_read_blob_parts';
# Create and drop dummy table to activate DBUG in binlog thread
CREATE TABLE dummy (a int primary key) ENGINE = NDB;
DROP TABLE dummy;
# Perform UPDATE with blob large enough to trigger reading
# blob parts and thus event will fail to be processed
UPDATE t1 SET b = REPEAT("NDB", 256*1),
c = REPEAT("MySQL", 1024*1) WHERE a = 37;
# mysqld1: Wait until ready again...
set @@global.debug = @save_debug;
# Check that LOST_EVENTS event was written to the binlog for
# INSERT and UPDATE. The DELETE should have a normal log entry.
include/show_binlog_events.inc
Log_name Pos Event_type Server_id End_log_pos Info
binlog.000001 # Query # # use `test`; CREATE TABLE dummy (a int primary key) ENGINE = NDB
binlog.000001 # Query # # use `test`; DROP TABLE `dummy` /* generated by server */
binlog.000001 # Incident # # #1 (LOST_EVENTS)
binlog.000001 # Rotate # # binlog.000002;pos=POS
RESET MASTER;
set @save_debug = @@global.debug;
set @@global.debug = '+d,ndb_event_fail_read_blob_parts';
# Create and drop dummy table to activate DBUG in binlog thread
CREATE TABLE dummy (a int primary key) ENGINE = NDB;
DROP TABLE dummy;
# Perform DELETE. The blob in NDB is large but only primary keys
# are needed so blob parts are not read. It is possible to configure
# "full image" to be logged, but that is not enabled in this test.
DELETE FROM t1 WHERE a = 37;
# mysqld1: Wait until ready again...
set @@global.debug = @save_debug;
# Check that LOST_EVENTS event was written to the binlog for
# INSERT and UPDATE. The DELETE should have a normal log entry.
include/show_binlog_events.inc
Log_name Pos Event_type Server_id End_log_pos Info
binlog.000001 # Query # # use `test`; CREATE TABLE dummy (a int primary key) ENGINE = NDB
binlog.000001 # Query # # use `test`; DROP TABLE `dummy` /* generated by server */
binlog.000001 # Query # # BEGIN
binlog.000001 # Table_map # # table_id: # (test.t1)
binlog.000001 # Table_map # # table_id: # (mysql.ndb_apply_status)
binlog.000001 # Write_rows # # table_id: #
binlog.000001 # Delete_rows # # table_id: # flags: STMT_END_F
binlog.000001 # Query # # COMMIT
DROP TABLE t1;
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