mysql-test/suite/sys_vars/t/innodb_buffer_pool_load_now_basic.test


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#
# Basic test for innodb_buffer_pool_load_now
#

-- source include/have_innodb.inc

# Check the default value
SET @orig = @@global.innodb_buffer_pool_load_now;
SELECT @orig;

let $old_status= `SELECT variable_value FROM information_schema.global_status
    WHERE LOWER(variable_name) = 'innodb_buffer_pool_dump_status'`;

# A previous test could have run buffer pool dump already; 
# in this case we want to make sure that the current time is different 
# from the timestamp in the status variable

let $wait_condition =
  SELECT TRIM(SUBSTR('$old_status', -8)) != DATE_FORMAT(CURTIME(), '%k:%i:%s');
-- source include/wait_condition.inc

# Do the dump
SET GLOBAL innodb_buffer_pool_dump_now = ON;

# Wait for the dump to complete
let $wait_condition =
  SELECT variable_value != '$old_status'
     AND SUBSTR(variable_value, 1, 33) = 'Buffer pool(s) dump completed at '
  FROM information_schema.global_status
  WHERE LOWER(variable_name) = 'innodb_buffer_pool_dump_status';
-- source include/wait_condition.inc

# Confirm the file is really created
-- let $file = `SELECT CONCAT(@@datadir, @@global.innodb_buffer_pool_filename)`
-- file_exists $file

# Load the dump
SET GLOBAL innodb_buffer_pool_load_now = ON;

# Wait for the load to complete
let $wait_condition =
  SELECT SUBSTR(variable_value, 1, 33) = 'Buffer pool(s) load completed at '
  FROM information_schema.global_status
  WHERE LOWER(variable_name) = 'innodb_buffer_pool_load_status';
-- source include/wait_condition.inc

# Show the status, interesting if the above timed out
-- replace_regex /[0-9]{6}[[:space:]]+[0-9]{1,2}:[0-9]{2}:[0-9]{2}/TIMESTAMP_NOW/
SELECT variable_value
FROM information_schema.global_status
WHERE LOWER(variable_name) = 'innodb_buffer_pool_load_status';