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|
######## include/ddl1.inc ######
#
# Purpose of include/ddl1.inc - include/ddl8.inc:
#
# Stress storage engines with rapid CREATE/DROP TABLE/INDEX
# and following SELECT/INSERT/SHOW etc.
#
# The variables
# $loop_size -- number of rounds till we look at the clock again
# $runtime -- rough intended runtime per subtest variant
# Real runtime without server restarts and comparison is:
# - >= $runtime
# - > runtime needed for $loop_size execution loops
# $engine_type -- storage engine to be used in CREATE TABLE
# must be set within the routine sourcing this script.
#
# Other stuff which must already exist:
# - connection con2
# - stmt_start and stmt_break prepared by the default connection
#
# Attention:
# The test does suppress the writing of most statements, server error
# messages and result sets.
# This is needed because their number is usual not deterministic.
# The test is partially self checking. That means is prints some
# helpful hints into the protocol and aborts if something is wrong.
#
# Creation of this test:
# 2007-07-04 mleich
#
############################################################################
#
# Some details:
#
# 1. Base question of the test:
# There was just a create or drop of some object (TABLE/INDEX).
#
# Could it happen that the next statement referring to this
# object gets a somehow wrong server response (result set,
# error message, warning) because the creation or removal of
# the object is in an incomplete state?
#
# Thinkable reasons for incomplete state of creation or removal:
# The server performs the creation or removal
# - all time incomplete.
# Example:
# Bug#28309 First insert violates unique constraint
# - was "memory" table empty ?
# - asynchronous
# In that case the next statement has probably to wait till
# completion.
#
# 2. Why do we use in some scripts "--error 0,<expected error>" followed
# a check of $mysql_errno?
#
# System reactions when running with "--error 0,<expected error>":
# - RC=0 --> no error message
# - RC=<expected error> --> no error message
# - RC not in (0,<expected error>) --> error message + abort of script
# execution
#
# Requirements and tricky solution for statements which are expected
# to fail:
# 1. RC=<expected error>
# - no abort of script execution
# --> add "--error <expected error>"
# - no error message into the protocol, because the number of
# executions is NOT deterministic
# --> use "--error 0,<expected error>"
# 2. RC=0 = failure
# - abort of script execution
# "--error 0,<expected error>" prevents the automatic abort of
# execution. Therefore we do not need to code the abort.
# --> Check $mysql_errno and do an explicit abort if $mysql_errno = 0.
# 3. RC not in (0,<expected error>)
# - abort of script execution
# "--error 0,<expected error>" causes an automatic abort.
#
# 3. We do not check the correctness of the SHOW CREATE TABLE output
# in detail. This must be done within other tests.
# We only check here that
# - same CREATE TABLE/INDEX statements lead to the same
# - different CREATE TABLE/INDEX statements lead to different
# SHOW CREATE TABLE output
# (Applies to ddl4.inc. and ddl8.inc.)
#
# 4. It could be assumed that running this test with
# - PS-PROTOCOL
# There are already subtests using prepared statements contained.
# - SP/CURSOR/VIEW-PROTOCOL
# These protocol variants transform SELECTs to hopefully much
# stressing statement sequencies using SP/CURSOR/VIEW.
# The SELECTs within include/ddl*.inc are very simple.
# does not increase the coverage.
# Therefore we skip runs with these protocols.
#
# 5. The test consumes significant runtime when running on a non RAM
# based filesystem (run without "--mem").
# Therefore we adjust $runtime and $loop_size depending on "--big-test"
# option.
# $runtime and $loop_size do not influence the expected results.
# Rough runtime in seconds reported by mysql-test-run.pl:
# (engine_type = MEMORY)
# option set -> $runtime $loop_size real runtime in seconds
# 1 20 68
# --mem 1 20 32
# --big-test 5 100 200
# --mem --big-test 5 100 400
# I assume that runs with slow filesystems are as much valuable
# as runs with extreme fast filesystems.
#
# 6. Hints for analysis of test failures:
# 1. Look into the protocol and check in which ddl*.inc
# script the difference to the expected result occurred.
# 2. Comment the sourcing of all other ddl*.inc scripts
# out.
# 3. Edit the ddl*.inc script where the error occurred and
# remove all
# - "--disable_query_log", "--disable_result_log"
# - successful passed subtests.
# 4. Alternative:
# Have a look into VARDIR/master-data/mysql/general_log.CSV
# and construct a new testcase from that.
# 5. If the problem is not deterministic, please try the following
# - increase $runtime (important), $loop_size (most probably
# less important) within the "t/ddl_<engine>.test" and
# maybe the "--testcase-timeout" assigned to mysqltest-run.pl
# - vary the I/O performance of the testing machine by using
# a RAM or disk based filesystem for VARDIR
#
#----------------------------------------------------------------------
# Settings for Subtest 1 variants
# Scenario: CREATE with UNIQUE KEY/INSERT/DROP TABLE like in Bug#28309
let $create_table= CREATE TABLE t1 (f1 BIGINT,f2 BIGINT,UNIQUE(f1),UNIQUE(f2))
ENGINE = $engine_type;
let $insert_into= INSERT INTO t1 VALUES (1,1), (2,2), (3,3);
let $drop_table= DROP TABLE t1;
#----------------------------------------------------------------------
#
--echo # Subtest 1A (one connection, no PREPARE/EXECUTE)
--echo # connection action
--echo # default: $create_table
--echo # default: $insert_into
--echo # default: $drop_table
--disable_query_log
connection default;
let $run= 1;
# Determine the current time.
EXECUTE stmt_start;
# Run execution loops till the planned runtime is reached
while ($run)
{
let $loop_run= $loop_size;
while ($loop_run)
{
eval $create_table;
eval $insert_into;
eval $drop_table;
dec $loop_run;
}
if (`EXECUTE stmt_break`)
{
let $run= 0;
}
}
--enable_query_log
#
--echo # Subtest 1B (one connection, use PREPARE/EXECUTE)
--echo # connection action
--echo # default: $create_table
--echo # default: $insert_into
--echo # default: $drop_table
--disable_query_log
connection default;
eval PREPARE create_table FROM "$create_table";
EXECUTE create_table;
eval PREPARE insert_into FROM "$insert_into";
eval PREPARE drop_table FROM "$drop_table";
EXECUTE drop_table;
let $run= 1;
# Determine the current time.
EXECUTE stmt_start;
# Run execution loops till the planned runtime is reached
while ($run)
{
let $loop_run= $loop_size;
while ($loop_run)
{
EXECUTE create_table;
EXECUTE insert_into;
EXECUTE drop_table;
dec $loop_run;
}
if (`EXECUTE stmt_break`)
{
let $run= 0;
}
}
DEALLOCATE PREPARE create_table;
DEALLOCATE PREPARE insert_into;
DEALLOCATE PREPARE drop_table;
--enable_query_log
#
--echo # Subtest 1C (two connections, no PREPARE/EXECUTE)
--echo # connection action
--echo # default: $create_table
--echo # con2: $insert_into
--echo # con2: $drop_table
--disable_query_log
connection default;
let $run= 1;
# Determine the current time.
EXECUTE stmt_start;
# Run execution loops till the planned runtime is reached
while ($run)
{
let $loop_run= $loop_size;
while ($loop_run)
{
eval $create_table;
connection con2;
eval $insert_into;
eval $drop_table;
connection default;
dec $loop_run;
}
if (`EXECUTE stmt_break`)
{
let $run= 0;
}
}
--enable_query_log
#
--echo # Subtest 1D (two connections, use PREPARE/EXECUTE)
--echo # connection action
--echo # default: $create_table
--echo # con2: $insert_into
--echo # con2: $drop_table
--disable_query_log
connection default;
eval PREPARE create_table FROM "$create_table";
EXECUTE create_table;
connection con2;
eval PREPARE insert_into FROM "$insert_into";
eval PREPARE drop_table FROM "$drop_table";
EXECUTE drop_table;
connection default;
let $run= 1;
# Determine the current time.
EXECUTE stmt_start;
# Run execution loops till the planned runtime is reached
while ($run)
{
let $loop_run= $loop_size;
while ($loop_run)
{
EXECUTE create_table;
connection con2;
EXECUTE insert_into;
EXECUTE drop_table;
connection default;
dec $loop_run;
}
if (`EXECUTE stmt_break`)
{
let $run= 0;
}
}
DEALLOCATE PREPARE create_table;
connection con2;
DEALLOCATE PREPARE insert_into;
DEALLOCATE PREPARE drop_table;
connection default;
--enable_query_log
|
