ClickHouse/tests/queries/0_stateless/01268_procfs_metrics.sh
2022-03-28 15:39:02 +02:00

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#!/usr/bin/env bash
# Sandbox does not provide CAP_NET_ADMIN capability but does have ProcFS mounted at /proc
# This ensures that OS metrics can be collected
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
# shellcheck source=../shell_config.sh
. "$CURDIR"/../shell_config.sh
function read_numbers_func()
{
$CLICKHOUSE_CLIENT -q "
SELECT * FROM numbers(600000000) FORMAT Null SETTINGS max_threads = 1
";
}
function show_processes_func()
{
while true; do
sleep 0.1;
# These two system metrics for the generating query above are guaranteed to be nonzero when ProcFS is mounted at /proc
$CLICKHOUSE_CLIENT -q "
SELECT count() > 0 FROM system.processes\
WHERE ProfileEvents['OSCPUVirtualTimeMicroseconds'] > 0 AND ProfileEvents['OSReadChars'] > 0 \
SETTINGS max_threads = 1
" | grep '1' && break;
done
}
export -f read_numbers_func;
export -f show_processes_func;
TIMEOUT=3
timeout $TIMEOUT bash -c read_numbers_func &
timeout $TIMEOUT bash -c show_processes_func &
wait
# otherwise it can be alive after test
query_alive=$($CLICKHOUSE_CLIENT --query "SELECT count() FROM system.processes WHERE query ILIKE 'SELECT * FROM numbers(600000000)%'")
while [[ $query_alive != 0 ]]
do
$CLICKHOUSE_CLIENT -q "KILL QUERY WHERE query ilike '%SELECT * FROM numbers(600000000)%'" 2> /dev/null 1> /dev/null
sleep 0.5
query_alive=$($CLICKHOUSE_CLIENT --query "SELECT count() FROM system.processes WHERE query ILIKE 'SELECT * FROM numbers(600000000)%'")
done
echo "Test OK"