ClickHouse/tests/queries/0_stateless/01005_rwr_shard_deadlock.sh

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#!/usr/bin/env bash
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
. $CURDIR/../shell_config.sh
set -e
$CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS test1";
$CLICKHOUSE_CLIENT --query "CREATE TABLE test1 (x UInt8) ENGINE = MergeTree ORDER BY tuple()";
function thread1()
{
while true; do
$CLICKHOUSE_CLIENT --query "ALTER TABLE test1 MODIFY COLUMN x Nullable(UInt8)"
$CLICKHOUSE_CLIENT --query "ALTER TABLE test1 MODIFY COLUMN x UInt8"
done
}
function thread2()
{
while true; do
$CLICKHOUSE_CLIENT --query "SELECT x FROM test1 WHERE x IN (SELECT x FROM remote('127.0.0.2', currentDatabase(), test1))" --format Null
done
}
# https://stackoverflow.com/questions/9954794/execute-a-shell-function-with-timeout
export -f thread1;
export -f thread2;
TIMEOUT=10
timeout $TIMEOUT bash -c thread1 2> /dev/null &
timeout $TIMEOUT bash -c thread2 2> /dev/null &
timeout $TIMEOUT bash -c thread1 2> /dev/null &
timeout $TIMEOUT bash -c thread2 2> /dev/null &
timeout $TIMEOUT bash -c thread1 2> /dev/null &
timeout $TIMEOUT bash -c thread2 2> /dev/null &
timeout $TIMEOUT bash -c thread1 2> /dev/null &
timeout $TIMEOUT bash -c thread2 2> /dev/null &
wait
$CLICKHOUSE_CLIENT -q "DROP TABLE test1"