mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-16 04:32:33 +00:00
62 lines
1.6 KiB
Bash
Executable File
62 lines
1.6 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 a"
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$CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS b"
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$CLICKHOUSE_CLIENT --query "CREATE TABLE a (x UInt8) ENGINE = MergeTree ORDER BY tuple()"
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$CLICKHOUSE_CLIENT --query "CREATE TABLE b (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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seq 1 100 | awk '{ print "SELECT x FROM a WHERE x IN (SELECT toUInt8(count()) FROM system.tables);" }' | $CLICKHOUSE_CLIENT -n
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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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seq 1 100 | awk '{ print "SELECT x FROM b WHERE x IN (SELECT toUInt8(count()) FROM system.tables);" }' | $CLICKHOUSE_CLIENT -n
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done
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}
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function thread3()
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{
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while true; do
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$CLICKHOUSE_CLIENT --query "ALTER TABLE a MODIFY COLUMN x Nullable(UInt8)"
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$CLICKHOUSE_CLIENT --query "ALTER TABLE a MODIFY COLUMN x UInt8"
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done
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}
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function thread4()
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{
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while true; do
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$CLICKHOUSE_CLIENT --query "ALTER TABLE b MODIFY COLUMN x Nullable(UInt8)"
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$CLICKHOUSE_CLIENT --query "ALTER TABLE b MODIFY COLUMN x UInt8"
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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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export -f thread3;
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export -f thread4;
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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 thread3 2> /dev/null &
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timeout $TIMEOUT bash -c thread4 2> /dev/null &
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wait
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$CLICKHOUSE_CLIENT --query "DROP TABLE a"
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$CLICKHOUSE_CLIENT --query "DROP TABLE b"
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