mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-30 11:32:03 +00:00
61 lines
2.3 KiB
Bash
Executable File
61 lines
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# Tags: no-fasttest, long
|
|
|
|
CUR_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
|
|
# shellcheck source=../shell_config.sh
|
|
. "$CUR_DIR"/../shell_config.sh
|
|
|
|
function check_refcnt_for_table()
|
|
{
|
|
local table=$1 && shift
|
|
|
|
$CLICKHOUSE_CLIENT -q "system stop merges $table"
|
|
$CLICKHOUSE_CLIENT -q "insert into $table select number, number%4 from numbers(200)"
|
|
|
|
local query_id
|
|
query_id="$table-$(random_str 10)"
|
|
|
|
# Notes:
|
|
# - query may sleep 1*(200/4)=50 seconds maximum, it is enough to check system.parts
|
|
# - "part = 1" condition should prune all parts except first
|
|
# - max_block_size=1 with index_granularity=1 will allow to cancel the query earlier
|
|
$CLICKHOUSE_CLIENT --format Null --max_threads 1 --max_block_size 1 --query_id "$query_id" -q "select sleepEachRow(1) from $table where part = 1" &
|
|
PID=$!
|
|
|
|
# wait for query to be started
|
|
while [ "$($CLICKHOUSE_CLIENT -q "select count() from system.processes where query_id = '$query_id'")" -ne 1 ]; do
|
|
sleep 0.1
|
|
done
|
|
|
|
# When the query only starts it execution it holds reference for each part,
|
|
# however when it starts reading, partition pruning takes place,
|
|
# and it should hold only parts that are required for SELECT
|
|
#
|
|
# But to reach partition prune the function sleepEachRow() will be executed twice,
|
|
# so 2 seconds for sleepEachRow() and 3 seconds just to ensure that it enters the reading stage.
|
|
sleep $((2+3))
|
|
|
|
# NOTE: parts that are used in query will have refcount increased for each range
|
|
$CLICKHOUSE_CLIENT -q "select table, name, refcount from system.parts where database = '$CLICKHOUSE_DATABASE' and table = '$table' and refcount > 1"
|
|
|
|
# Kill the query gracefully.
|
|
kill -INT $PID
|
|
wait $PID
|
|
}
|
|
|
|
# NOTE: index_granularity=1 to cancel ASAP
|
|
|
|
$CLICKHOUSE_CLIENT -nmq "
|
|
drop table if exists data_02340;
|
|
create table data_02340 (key Int, part Int) engine=MergeTree() partition by part order by key settings index_granularity=1;
|
|
" || exit 1
|
|
check_refcnt_for_table data_02340
|
|
|
|
$CLICKHOUSE_CLIENT -nmq "
|
|
drop table if exists data_02340_rep;
|
|
create table data_02340_rep (key Int, part Int) engine=ReplicatedMergeTree('/clickhouse/$CLICKHOUSE_TEST_ZOOKEEPER_PREFIX', '1') partition by part order by key settings index_granularity=1;
|
|
" || exit 1
|
|
check_refcnt_for_table data_02340_rep
|
|
|
|
exit 0
|