thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-23 08:02:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Update 01602_max_distributed_connections.sh

Browse Source
This commit is contained in:
alexey-milovidov 2021-04-20 03:20:36 +03:00 committed by GitHub
parent 0784efa813
commit 3381d0dce9
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
tests/queries/0_stateless/01602_max_distributed_connections.sh
View File

@ -7,19 +7,19 @@ CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
# We check that even if max_threads is small, the setting max_distributed_connections
# will allow to process queries on multiple shards concurrently.
# We do sleep 0.15 seconds on ten machines.
# If concurrency is one (bad) the query will take at least 1.5 seconds and the following loops are guaranteed to be infinite.
# If concurrency is 10 (good), the query may take less than 1 second with non-zero probability
# We do sleep 1.5 seconds on ten machines.
# If concurrency is one (bad) the query will take at least 15 seconds and the following loops are guaranteed to be infinite.
# If concurrency is 10 (good), the query may take less than 10 second with non-zero probability
# and the following loops will finish with probability 1 assuming independent random variables.
while true; do
timeout 1 ${CLICKHOUSE_CLIENT} --max_threads 1 --max_distributed_connections 10 --query "
SELECT sleep(0.15) FROM remote('127.{1..10}', system.one) FORMAT Null" --prefer_localhost_replica=0 && break
timeout 10 ${CLICKHOUSE_CLIENT} --max_threads 1 --max_distributed_connections 10 --query "
SELECT sleep(1.5) FROM remote('127.{1..10}', system.one) FORMAT Null" --prefer_localhost_replica=0 && break
done
while true; do
timeout 1 ${CLICKHOUSE_CLIENT} --max_threads 1 --max_distributed_connections 10 --query "
SELECT sleep(0.15) FROM remote('127.{1..10}', system.one) FORMAT Null" --prefer_localhost_replica=1 && break
timeout 10 ${CLICKHOUSE_CLIENT} --max_threads 1 --max_distributed_connections 10 --query "
SELECT sleep(1.5) FROM remote('127.{1..10}', system.one) FORMAT Null" --prefer_localhost_replica=1 && break
done
# If max_distributed_connections is low and async_socket_for_remote is disabled,