ClickHouse/tests/queries/0_stateless/01085_max_distributed_connections.sh
2021-05-25 20:22:32 +03:00

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#!/usr/bin/env bash
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
# shellcheck source=../shell_config.sh
. "$CURDIR"/../shell_config.sh
# Sometimes five seconds are not enough due to system overload.
# But if it can run in less than five seconds at least sometimes - it is enough for the test.
while true
do
opts=(
--max_distributed_connections 9
--max_threads 1
--query "SELECT sleepEachRow(1) FROM remote('127.{2..10}', system.one)"
--format Null
)
# 5 less then 9 seconds (9 streams), but long enough to cover possible load peaks
# "$@" left to pass manual options (like --experimental_use_processors 0) during manual testing
timeout 5s ${CLICKHOUSE_CLIENT} "${opts[@]}" "$@" && break
done