mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-02 04:22:03 +00:00
56 lines
2.4 KiB
Bash
Executable File
56 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
|
|
# Check that total_rows_approx (via system.processes) includes all rows from
|
|
# all parts at the query start.
|
|
#
|
|
# At some point total_rows_approx was accounted only when the query starts
|
|
# reading the part, and so total_rows_approx wasn't reliable, even for simple
|
|
# SELECT FROM MergeTree()
|
|
# It was fixed by take total_rows_approx into account as soon as possible.
|
|
#
|
|
# To check total_rows_approx this query starts the query in background,
|
|
# that sleep's 1 second for each part, and by using max_threads=1 the query
|
|
# reads parts sequentially and sleeps 1 second between parts.
|
|
# Also the test spawns background process to check total_rows_approx for this
|
|
# query.
|
|
# It checks multiple times since at first few iterations the query may not
|
|
# start yet (since there are 3 excessive sleep calls - 1 for primary key
|
|
# analysis and 2 for partition pruning), and get only last 5 total_rows_approx
|
|
# rows (one row is not enough since when the query finishes total_rows_approx
|
|
# will be set to 10 anyway, regardless proper accounting).
|
|
|
|
CUR_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
|
|
# shellcheck source=../shell_config.sh
|
|
. "$CUR_DIR"/../shell_config.sh
|
|
|
|
$CLICKHOUSE_CLIENT -q "drop table if exists data_01882"
|
|
$CLICKHOUSE_CLIENT -q "create table data_01882 (key Int) Engine=MergeTree() partition by key order by key as select * from numbers(10)"
|
|
QUERY_ID="$CLICKHOUSE_TEST_NAME-$(tr -cd '[:lower:]' < /dev/urandom | head -c10)"
|
|
|
|
function check_background_query()
|
|
{
|
|
echo "Waiting for query to be started..."
|
|
while [[ $($CLICKHOUSE_CLIENT --param_query_id="$QUERY_ID" -q 'select count() from system.processes where query_id = {query_id:String}') != 1 ]]; do
|
|
sleep 0.01
|
|
done
|
|
echo "Query started."
|
|
|
|
echo "Checking total_rows_approx."
|
|
# check total_rows_approx multiple times
|
|
# (to make test more reliable to what it covers)
|
|
local i=0
|
|
for ((i = 0; i < 20; ++i)); do
|
|
$CLICKHOUSE_CLIENT --param_query_id="$QUERY_ID" -q 'select total_rows_approx from system.processes where query_id = {query_id:String}'
|
|
(( ++i ))
|
|
sleep 1
|
|
done | tail -n5
|
|
}
|
|
check_background_query &
|
|
|
|
# this query will sleep 10 seconds in total, 1 seconds for each part (10 parts).
|
|
$CLICKHOUSE_CLIENT -q "select *, sleepEachRow(1) from data_01882" --max_threads=1 --format Null --query_id="$QUERY_ID" --max_block_size=1
|
|
|
|
wait
|
|
|
|
$CLICKHOUSE_CLIENT -q "drop table data_01882"
|