ClickHouse/tests/queries/0_stateless/00941_system_columns_race_condition.sh
2023-07-05 07:17:52 +00:00

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#!/usr/bin/env bash
# Tags: race
# Test fix for issue #5066
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
# shellcheck source=../shell_config.sh
. "$CURDIR"/../shell_config.sh
set -e
$CLICKHOUSE_CLIENT -q "DROP TABLE IF EXISTS alter_table"
$CLICKHOUSE_CLIENT -q "CREATE TABLE alter_table (a UInt8, b Int16, c Float32, d String, e Array(UInt8), f Nullable(UUID), g Tuple(UInt8, UInt16)) ENGINE = MergeTree ORDER BY a"
function thread1()
{
local TIMELIMIT=$((SECONDS+$1))
while [ $SECONDS -lt "$TIMELIMIT" ]; do
# NOTE: database = $CLICKHOUSE_DATABASE is unwanted
$CLICKHOUSE_CLIENT --query "SELECT name FROM system.columns UNION ALL SELECT name FROM system.columns FORMAT Null";
done
}
function thread2()
{
local TIMELIMIT=$((SECONDS+$1))
while [ $SECONDS -lt "$TIMELIMIT" ]; do
$CLICKHOUSE_CLIENT -n --query "ALTER TABLE alter_table ADD COLUMN h String; ALTER TABLE alter_table MODIFY COLUMN h UInt64; ALTER TABLE alter_table DROP COLUMN h;";
done
}
# https://stackoverflow.com/questions/9954794/execute-a-shell-function-with-timeout
export -f thread1;
export -f thread2;
TIMEOUT=15
thread1 $TIMEOUT 2> /dev/null &
thread1 $TIMEOUT 2> /dev/null &
thread1 $TIMEOUT 2> /dev/null &
thread1 $TIMEOUT 2> /dev/null &
thread2 $TIMEOUT 2> /dev/null &
thread2 $TIMEOUT 2> /dev/null &
thread2 $TIMEOUT 2> /dev/null &
thread2 $TIMEOUT 2> /dev/null &
thread1 $TIMEOUT 2> /dev/null &
thread1 $TIMEOUT 2> /dev/null &
thread1 $TIMEOUT 2> /dev/null &
thread1 $TIMEOUT 2> /dev/null &
thread2 $TIMEOUT 2> /dev/null &
thread2 $TIMEOUT 2> /dev/null &
thread2 $TIMEOUT 2> /dev/null &
thread2 $TIMEOUT 2> /dev/null &
wait
$CLICKHOUSE_CLIENT -q "DROP TABLE alter_table"