ClickHouse/tests/queries/0_stateless/00816_long_concurrent_alter_column.sh

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#!/usr/bin/env bash
set -e
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
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. "$CURDIR"/../shell_config.sh
echo "DROP TABLE IF EXISTS concurrent_alter_column" | ${CLICKHOUSE_CLIENT}
echo "CREATE TABLE concurrent_alter_column (ts DATETIME) ENGINE = MergeTree PARTITION BY toStartOfDay(ts) ORDER BY tuple()" | ${CLICKHOUSE_CLIENT}
function thread1()
{
while true; do
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for i in {1..500}; do echo "ALTER TABLE concurrent_alter_column ADD COLUMN c$i DOUBLE;"; done | ${CLICKHOUSE_CLIENT} -n --query_id=alter_00816_1
done
}
function thread2()
{
while true; do
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echo "ALTER TABLE concurrent_alter_column ADD COLUMN d DOUBLE" | ${CLICKHOUSE_CLIENT} --query_id=alter_00816_2;
sleep "$(echo 0.0$RANDOM)";
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echo "ALTER TABLE concurrent_alter_column DROP COLUMN d" | ${CLICKHOUSE_CLIENT} --query_id=alter_00816_2;
done
}
function thread3()
{
while true; do
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echo "ALTER TABLE concurrent_alter_column ADD COLUMN e DOUBLE" | ${CLICKHOUSE_CLIENT} --query_id=alter_00816_3;
sleep "$(echo 0.0$RANDOM)";
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echo "ALTER TABLE concurrent_alter_column DROP COLUMN e" | ${CLICKHOUSE_CLIENT} --query_id=alter_00816_3;
done
}
function thread4()
{
while true; do
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echo "ALTER TABLE concurrent_alter_column ADD COLUMN f DOUBLE" | ${CLICKHOUSE_CLIENT} --query_id=alter_00816_4;
sleep "$(echo 0.0$RANDOM)";
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echo "ALTER TABLE concurrent_alter_column DROP COLUMN f" | ${CLICKHOUSE_CLIENT} --query_id=alter_00816_4;
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=30
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
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echo "DROP TABLE concurrent_alter_column NO DELAY" | ${CLICKHOUSE_CLIENT} # NO DELAY has effect only for Atomic database
db_engine=`$CLICKHOUSE_CLIENT -q "SELECT engine FROM system.databases WHERE name=currentDatabase()"`
if [[ $db_engine == "Atomic" ]]; then
# DROP is non-blocking, so wait for alters
while true; do
$CLICKHOUSE_CLIENT -q "SELECT c = 0 FROM (SELECT count() as c FROM system.processes WHERE query_id LIKE 'alter_00816_%')" | grep 1 > /dev/null && break;
sleep 1;
done
fi
# Check for deadlocks
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echo "SELECT * FROM system.processes WHERE query_id LIKE 'alter_00816_%'" | ${CLICKHOUSE_CLIENT}
echo 'did not crash'