-- { echo }

SYSTEM DROP FILESYSTEM CACHE;
SET enable_filesystem_cache_on_write_operations=0;
DROP TABLE IF EXISTS test;
CREATE TABLE test (key UInt32, value String) Engine=MergeTree() ORDER BY key SETTINGS storage_policy='s3_cache', min_bytes_for_wide_part = 10485760;
INSERT INTO test SELECT number, toString(number) FROM numbers(100);
SELECT  * FROM test FORMAT Null;
SELECT file_segment_range_begin, file_segment_range_end, size FROM system.filesystem_cache ORDER BY file_segment_range_end, size;
0	0	1
0	79	80
0	745	746
SYSTEM DROP FILESYSTEM CACHE;
SELECT file_segment_range_begin, file_segment_range_end, size FROM system.filesystem_cache;
SELECT * FROM test FORMAT Null;
SELECT file_segment_range_begin, file_segment_range_end, size FROM system.filesystem_cache;
0	745	746
SYSTEM DROP FILESYSTEM CACHE;
SELECT file_segment_range_begin, file_segment_range_end, size FROM system.filesystem_cache;