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