ClickHouse/tests/queries/0_stateless/01246_buffer_flush.sh
Azat Khuzhin 5aedbac37d Fix 01246_buffer_flush flakiness
- reduce min_time for Buffer's min test
- rewrite the test to .sh to avoid extra sleeping time (with .sql we
  have to wait the max time)
- change the assertion for min test, the time there should not exceed
  max time (100 seconds), this should fix with test flakiness [1] even
  after [2].

  [1]: https://s3.amazonaws.com/clickhouse-test-reports/0/76119a4567ce2ac9c0aff715c1a9ba2607e806e0/stateless_tests__tsan__[3_5].html
  [2]: https://github.com/ClickHouse/ClickHouse/pull/65310

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
2024-07-07 16:54:37 +02:00

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#!/usr/bin/env bash
# Tags: no-fasttest
CUR_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
# shellcheck source=../shell_config.sh
. "$CUR_DIR"/../shell_config.sh
function elapsed_sec()
{
local expr=$1 && shift
local start end
start=$(date +%s.%N)
while ! eval "$expr"; do
sleep 0.5
done
end=$(date +%s.%N)
$CLICKHOUSE_LOCAL -q "select floor($end-$start)"
}
$CLICKHOUSE_CLIENT -nm -q "
drop table if exists data_01256;
drop table if exists buffer_01256;
create table data_01256 as system.numbers Engine=Memory();
"
echo "min"
$CLICKHOUSE_CLIENT -nm -q "
create table buffer_01256 as system.numbers Engine=Buffer(currentDatabase(), data_01256, 1,
2, 100, /* time */
4, 100, /* rows */
1, 1e6 /* bytes */
);
insert into buffer_01256 select * from system.numbers limit 5;
select count() from data_01256;
"
sec=$(elapsed_sec '[[ $($CLICKHOUSE_CLIENT -q "select count() from data_01256") -eq 5 ]]')
[[ $sec -ge 2 ]] || echo "Buffer flushed too early, min_time=2, flushed after $sec sec"
[[ $sec -lt 100 ]] || echo "Buffer flushed too late, max_time=100, flushed after $sec sec"
$CLICKHOUSE_CLIENT -q "select count() from data_01256"
$CLICKHOUSE_CLIENT -q "drop table buffer_01256"
echo "max"
$CLICKHOUSE_CLIENT -nm -q "
create table buffer_01256 as system.numbers Engine=Buffer(currentDatabase(), data_01256, 1,
100, 2, /* time */
0, 100, /* rows */
0, 1e6 /* bytes */
);
insert into buffer_01256 select * from system.numbers limit 5;
select count() from data_01256;
"
sec=$(elapsed_sec '[[ $($CLICKHOUSE_CLIENT -q "select count() from data_01256") -eq 10 ]]')
[[ $sec -ge 2 ]] || echo "Buffer flushed too early, max_time=2, flushed after $sec sec"
$CLICKHOUSE_CLIENT -q "select count() from data_01256"
$CLICKHOUSE_CLIENT -q "drop table buffer_01256"
echo "direct"
$CLICKHOUSE_CLIENT -nm -q "
create table buffer_01256 as system.numbers Engine=Buffer(currentDatabase(), data_01256, 1,
100, 100, /* time */
0, 9, /* rows */
0, 1e6 /* bytes */
);
insert into buffer_01256 select * from system.numbers limit 10;
select count() from data_01256;
"
echo "drop"
$CLICKHOUSE_CLIENT -nm -q "
insert into buffer_01256 select * from system.numbers limit 10;
drop table if exists buffer_01256;
select count() from data_01256;
"
$CLICKHOUSE_CLIENT -q "drop table data_01256"