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# ************************************************************
# wl6504: This testcase is to check the functionality of the
# innodb_buffer_pool_dump_pct flag
# step 1.Set innodb_buffer_pool_dump_pct=100 and take the dump
# step 2.Set innodb_buffer_pool_dump_pct=50 and take the dump
# step 3.Compare the size of both the dump files
# Here if the size of step 1 > size of step 2 (pass) else fail
#*************************************************************
--source include/have_innodb.inc
--source include/have_innodb_16k.inc

--echo # Set the environmental variables
let MYSQLD_DATADIR = `SELECT @@datadir`;

--echo # Create a table
CREATE TABLE tab5 (col1 int auto_increment primary key,
col2 VARCHAR(25), col3 varchar(25)) ENGINE=InnoDB;

-- echo # Create indexes
CREATE INDEX idx1 ON tab5(col2(10));
CREATE INDEX idx2 ON tab5(col3(10));

--echo # Insert a sample record
INSERT INTO tab5(col2,col3) VALUES('Test for wl6504','Test for dump pct');

--echo # Set the dump file name
SET GLOBAL innodb_buffer_pool_filename=ib_buffer_pool100;

SET GLOBAL innodb_buffer_pool_dump_pct=100;

#***********************************************************
# SELECT *
# FROM information_schema.global_status
# WHERE variable_name = 'INNODB_BUFFER_POOL_DUMP_STATUS'
# gives
# a) VARIABLE_NAME                   VARIABLE_VALUE
#    INNODB_BUFFER_POOL_DUMP_STATUS  not started
#    in case there was no innodb_buffer_pool_dump since server start.
# b) Something like
#    VARIABLE_NAME                   VARIABLE_VALUE
#    INNODB_BUFFER_POOL_DUMP_STATUS  Buffer pool(s) dump completed at 130711 13:43:24
#    in case there was a innodb_buffer_pool_dump since server start.
# Attention:
# - There is no guarantee that the current test is the first test which
#   made an innodb_buffer_pool_dump since server startup.
# - The granularity of the timestamp is one second.
# - There could have been some dump caused by some previous test
#   just a few milliseconds before.
# In order to avoid conflict with previous tests, read the current value
# of INNODB_BUFFER_POOL_DUMP_STATUS
# and confirm that the timestamp is different after the dump
#***********************************************************

# Read the current value to compare with the new value.
--disable_warnings
SELECT variable_value INTO @IBPDS
FROM information_schema.global_status
WHERE variable_name = 'INNODB_BUFFER_POOL_DUMP_STATUS';
--enable_warnings

--echo # Take the dump file
SET GLOBAL innodb_buffer_pool_dump_now=ON;

# Sleep one second in order to ensure that the time stamp is
# different at next dump
--sleep 1

--echo # Wait until the system table get updated & dump get created
--disable_warnings
let $wait_condition = SELECT count(*) = 1
FROM information_schema.global_status
WHERE variable_name = 'INNODB_BUFFER_POOL_DUMP_STATUS'
AND variable_value != @IBPDS
AND variable_value like 'Buffer pool(s) dump completed at%';
--enable_warnings

--echo # Check the dump file exist in the DATADIR
--file_exists $MYSQLD_DATADIR/ib_buffer_pool100

--echo # Set the dump file name
SET GLOBAL innodb_buffer_pool_filename=ib_buffer_pool50;

--echo # Set the value 50
SET GLOBAL innodb_buffer_pool_dump_pct=50;

--echo # Check the value is 50
SELECT @@global.innodb_buffer_pool_dump_pct;

# Read the current value to compare with the new value.
--disable_warnings
SELECT variable_value INTO @IBPDS
FROM information_schema.global_status
WHERE variable_name = 'INNODB_BUFFER_POOL_DUMP_STATUS';
--enable_warnings

--echo # Take the dump file
SET GLOBAL innodb_buffer_pool_dump_now=ON;

# Sleep one second in order to ensure that the time stamp is
# different at next dump
--sleep 1

--echo # Wait until the system table get updated & dump get created
--disable_warnings
let $wait_condition = SELECT count(*) = 1
FROM information_schema.global_status
WHERE variable_name = 'INNODB_BUFFER_POOL_DUMP_STATUS'
AND variable_value != @IBPDS
AND variable_value like 'Buffer pool(s) dump completed at%'; 
--enable_warnings

--echo # Check the dump file exist in the DATADIR
--file_exists $MYSQLD_DATADIR/ib_buffer_pool50

--echo # Get the size of the dump files & compare
perl;
my $dir = $ENV{'MYSQLD_DATADIR'};
my $size;
opendir(DIR, $dir) or die $!;
while (my $file = readdir(DIR))
{

  if ($file =~ m/\ib_buffer_pool50$/) {
    $size50 = -s "$dir/$file";
  } elsif ($file =~ m/\ib_buffer_pool100$/) {
    $size100 = -s "$dir/$file";
  }

}

# Check the size of the dump files ,here size100 should always be greater
 if ($size100 > $size50) {
   print "wl6504 test PASS\n";
 } else {
   print "wl6504 test FAIL\n";
 }

 close(DIR);
 exit(0)
EOF

--echo # Reset the default value
SET GLOBAL innodb_buffer_pool_dump_pct=Default;
SET GLOBAL innodb_buffer_pool_filename=Default;

--echo # Cleanup
--remove_file $MYSQLD_DATADIR/ib_buffer_pool100
--remove_file $MYSQLD_DATADIR/ib_buffer_pool50
DROP TABLE tab5;