3
# Show that mysqlbinlog can handle big rows.
7
# The *huge* output of mysqlbinlog will be redirected to
8
# $MYSQLTEST_VARDIR/$mysqlbinlog_output
10
--let $mysqlbinlog_output= tmp/mysqlbinlog_big_1.out
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#--source include/have_myisam.inc
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--let $engine_type= MyISAM
16
# This test case is insensitive to the binlog format
17
# because we don't display the output of mysqlbinlog.
19
#--source include/have_binlog_format_row.inc
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--source include/have_log_bin.inc
24
--source include/big_test.inc
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--echo # Preparatory cleanup.
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DROP TABLE IF EXISTS t1;
34
--echo # We need a fixed timestamp to avoid varying results.
36
SET timestamp=1000000000;
39
--echo # We need big packets.
41
--echo # Capture initial value to reset at the end of the test
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# use let $<var> = query_get_value as FLUSH statements
43
# in the test will set @<var> values to NULL
44
let $orig_max_allowed_packet =
45
query_get_value(SELECT @@global.max_allowed_packet, @@global.max_allowed_packet, 1);
47
--echo # Now adjust max_allowed_packet
48
SET @@global.max_allowed_packet= 1024*1024*1024;
50
--echo max_allowed_packet is a global variable.
51
--echo In order for the preceding change in max_allowed_packets' value
52
--echo to be seen and used, we must start a new connection.
53
--echo The change does not take effect with the current one.
54
--echo For simplicity, we just disconnect / reconnect connection default here.
55
--echo Disconnecting default connection...
57
--echo Reconnecting default connection...
58
connect (default, localhost,root,,);
59
--echo default connection established, continuing with the test
62
--echo # Delete all existing binary logs.
67
--echo # Create a test table.
69
eval CREATE TABLE t1 (
71
) ENGINE=$engine_type DEFAULT CHARSET latin1;
74
--echo # Show how many rows are affected by each statement.
79
--echo # Insert some big rows.
83
INSERT INTO t1 VALUES (REPEAT('ManyMegaByteBlck', 16777216));
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INSERT INTO t1 VALUES (REPEAT('ManyMegaByteBlck', 2097152));
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INSERT INTO t1 VALUES (REPEAT('ManyMegaByteBlck', 262144));
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INSERT INTO t1 VALUES (REPEAT('ManyMegaByteBlck', 32768));
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--echo # Show what we have in the table.
96
--echo # Do not display the column value itself, just its length.
99
query_vertical SELECT LENGTH(c1) FROM t1;
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--echo # Grow the rows by updating.
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UPDATE t1 SET c1 = CONCAT(c1, c1);
107
--echo # Show what we have in the table.
108
--echo # Do not display the column value itself, just its length.
111
query_vertical SELECT LENGTH(c1) FROM t1;
114
--echo # Delete the rows.
116
DELETE FROM t1 WHERE c1 >= 'ManyMegaByteBlck';
119
--echo # Hide how many rows are affected by each statement.
124
--echo # Flush all log buffers to the log file.
129
--echo # Call mysqlbinlog to display the log file contents.
130
--echo # NOTE: The output of mysqlbinlog is redirected to
131
--echo # \$MYSQLTEST_VARDIR/$mysqlbinlog_output
132
--echo # If you want to examine it, disable remove_file
133
--echo # at the bottom of the test script.
135
let $MYSQLD_DATADIR= `select @@datadir`;
136
--replace_result $MYSQLTEST_VARDIR <MYSQLTEST_VARDIR>
137
--replace_regex /SQL_LOAD_MB-[0-9]-[0-9]/SQL_LOAD_MB-#-#/ /exec_time=[0-9]*/exec_time=#/ /end_log_pos [0-9]*/end_log_pos #/ /# at [0-9]*/# at #/ /Xid = [0-9]*/Xid = #/
138
--exec $MYSQL_BINLOG -v -v $MYSQLD_DATADIR/master-bin.000001 > $MYSQLTEST_VARDIR/$mysqlbinlog_output
143
--echo # reset variable value to pass testcase checks
144
eval SET @@global.max_allowed_packet = $orig_max_allowed_packet;
147
--echo remove_file \$MYSQLTEST_VARDIR/$mysqlbinlog_output
149
# NOTE: If you want to see the *huge* mysqlbinlog output, disable next line:
151
--remove_file $MYSQLTEST_VARDIR/$mysqlbinlog_output