mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-19 15:01:03 +00:00
dbe45800d9
Since background flush will not be accounted there, and it can be too tricky to calclulate this limit, in case you have multiple materialized views with Buffer engine. v2: test adjustment
25 lines
753 B
SQL
25 lines
753 B
SQL
DROP TABLE IF EXISTS null_;
|
|
DROP TABLE IF EXISTS buffer_;
|
|
|
|
CREATE TABLE null_ (key UInt64) Engine=Null();
|
|
CREATE TABLE buffer_ (key UInt64) Engine=Buffer(currentDatabase(), null_,
|
|
1, /* num_layers */
|
|
0, /* min_time */
|
|
86400,/* max_time */
|
|
0, /* min_rows */
|
|
100e9,/* max_rows */
|
|
0, /* min_bytes */
|
|
20e6 /* max_bytes */
|
|
);
|
|
|
|
-- note that there is untracked_memory_limit (4MB) in MemoryTracker
|
|
SET max_memory_usage=10e6;
|
|
|
|
SET min_insert_block_size_bytes=9e6;
|
|
INSERT INTO buffer_ SELECT toUInt64(number) FROM system.numbers LIMIT 10e6; -- { serverError 241 }
|
|
|
|
OPTIMIZE TABLE buffer_; -- flush
|
|
|
|
SET min_insert_block_size_bytes=1e6;
|
|
INSERT INTO buffer_ SELECT toUInt64(number) FROM system.numbers LIMIT 10e6;
|