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fix(memory leaks): MCOL-5791 - get rid of memory leaks in plugin code

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There were numerous memory leaks in plugin's code and associated code.
During typical run of MTR tests it leaked around 65 megabytes of
objects. As a result they may severely affect long-lived connections.

This patch fixes (almost) all leaks found in the plugin. The exceptions
are two leaks associated with SHOW CREATE TABLE columnstore_table and
getting information of columns of columnstore-handled table. These
should be fixed on the server side and work is on the way.
This commit is contained in:
Serguey Zefirov
2024-09-30 14:50:35 +03:00
committed by Sergey Zefirov
parent 6445f4dff3
commit 38fd96a663
31 changed files with 472 additions and 229 deletions
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16
tests/scripts/fullmtr.sh
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@ -7,6 +7,9 @@ CURRENT_DIR=`pwd`
mysql -e "create database if not exists test;"
SOCKET=`mysql -e "show variables like 'socket';" | grep socket | cut -f2`
export ASAN_OPTIONS=abort_on_error=1:disable_coredump=0,print_stats=false,detect_odr_violation=0,check_initialization_order=1,detect_stack_use_after_return=1,atexit=false,log_path=/core/asan.hz
cd ${INSTALLED_MTR_PATH}
if [[ ! -d ${COLUMSNTORE_MTR_INSTALLED} ]]; then
@ -21,7 +24,15 @@ if [[ ! -d '/data/qa/source/dbt3/' || ! -d '/data/qa/source/ssb/' ]]; then
fi
run_suite()
{
./mtr --force --max-test-fail=0 --testcase-timeout=60 --extern socket=$SOCKET --suite=columnstore/$1 $2 | tee $CURRENT_DIR/mtr.$1.log 2>&1
ls /core >$CURRENT_DIR/mtr.$1.cores-before
./mtr --force --max-test-fail=0 --testcase-timeout=60 --suite=columnstore/$1 $2 | tee $CURRENT_DIR/mtr.$1.log 2>&1
# dump analyses.
systemctl stop mariadb
systemctl start mariadb
ls /core >$CURRENT_DIR/mtr.$1.cores-after
echo "reports or coredumps:"
diff -u $CURRENT_DIR/mtr.$1.cores-before $CURRENT_DIR/mtr.$1.cores-after && echo "no new reports or coredumps"
rm $CURRENT_DIR/mtr.$1.cores-before $CURRENT_DIR/mtr.$1.cores-after
}
if (( $# == 2 )); then
@ -29,8 +40,9 @@ if (( $# == 2 )); then
exit 1
fi
run_suite setup
run_suite basic
run_suite bugfixes
run_suite setup
run_suite devregression
run_suite autopilot
run_suite extended