ClickHouse/tests/queries/0_stateless/01007_r1r2_w_r2r1_deadlock.sh
2021-09-12 17:15:28 +03:00

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#!/usr/bin/env bash
# Tags: deadlock
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
# shellcheck source=../shell_config.sh
. "$CURDIR"/../shell_config.sh
set -e
$CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS a"
$CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS b"
$CLICKHOUSE_CLIENT --query "CREATE TABLE a (x UInt8) ENGINE = MergeTree ORDER BY tuple()"
$CLICKHOUSE_CLIENT --query "CREATE TABLE b (x UInt8) ENGINE = MergeTree ORDER BY tuple()"
function thread1()
{
while true; do
# NOTE: database = $CLICKHOUSE_DATABASE is unwanted
seq 1 100 | awk '{ print "SELECT x FROM a WHERE x IN (SELECT toUInt8(count()) FROM system.tables);" }' | $CLICKHOUSE_CLIENT -n
done
}
function thread2()
{
while true; do
# NOTE: database = $CLICKHOUSE_DATABASE is unwanted
seq 1 100 | awk '{ print "SELECT x FROM b WHERE x IN (SELECT toUInt8(count()) FROM system.tables);" }' | $CLICKHOUSE_CLIENT -n
done
}
function thread3()
{
while true; do
$CLICKHOUSE_CLIENT --query "ALTER TABLE a MODIFY COLUMN x Nullable(UInt8)"
$CLICKHOUSE_CLIENT --query "ALTER TABLE a MODIFY COLUMN x UInt8"
done
}
function thread4()
{
while true; do
$CLICKHOUSE_CLIENT --query "ALTER TABLE b MODIFY COLUMN x Nullable(UInt8)"
$CLICKHOUSE_CLIENT --query "ALTER TABLE b MODIFY COLUMN x UInt8"
done
}
# https://stackoverflow.com/questions/9954794/execute-a-shell-function-with-timeout
export -f thread1;
export -f thread2;
export -f thread3;
export -f thread4;
TIMEOUT=10
timeout $TIMEOUT bash -c thread1 2> /dev/null &
timeout $TIMEOUT bash -c thread2 2> /dev/null &
timeout $TIMEOUT bash -c thread3 2> /dev/null &
timeout $TIMEOUT bash -c thread4 2> /dev/null &
wait
$CLICKHOUSE_CLIENT --query "DROP TABLE a"
$CLICKHOUSE_CLIENT --query "DROP TABLE b"