mirror of
https://github.com/ClickHouse/ClickHouse.git
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71 lines
2.4 KiB
SQL
71 lines
2.4 KiB
SQL
-- Tags: no-parallel, no-fasttest, long, no-random-settings
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SET max_memory_usage='20G';
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SET enable_filesystem_cache_on_write_operations = 0;
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DROP TABLE IF EXISTS test;
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CREATE TABLE test (key UInt32, value String) Engine=MergeTree() ORDER BY key SETTINGS storage_policy='s3_cache';
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INSERT INTO test SELECT * FROM generateRandom('key UInt32, value String') LIMIT 10000;
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SET remote_filesystem_read_method='threadpool';
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SELECT 1, * FROM test LIMIT 10 FORMAT Null;
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SYSTEM FLUSH LOGS;
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SELECT query,
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ProfileEvents['CachedReadBufferReadFromSourceBytes'] > 0 as remote_fs_read,
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ProfileEvents['CachedReadBufferReadFromCacheBytes'] > 0 as remote_fs_cache_read,
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ProfileEvents['CachedReadBufferCacheWriteBytes'] > 0 as remote_fs_read_and_download
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FROM system.query_log
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WHERE query LIKE 'SELECT 1, * FROM test LIMIT%'
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AND type = 'QueryFinish'
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AND current_database = currentDatabase()
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ORDER BY query_start_time DESC
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LIMIT 1;
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set remote_filesystem_read_method = 'read';
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set local_filesystem_read_method = 'pread';
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SELECT 2, * FROM test LIMIT 10 FORMAT Null;
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SYSTEM FLUSH LOGS;
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SELECT query,
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ProfileEvents['CachedReadBufferReadFromSourceBytes'] > 0 as remote_fs_read,
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ProfileEvents['CachedReadBufferReadFromCacheBytes'] > 0 as remote_fs_cache_read,
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ProfileEvents['CachedReadBufferCacheWriteBytes'] > 0 as remote_fs_read_and_download
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FROM system.query_log
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WHERE query LIKE 'SELECT 2, * FROM test LIMIT%'
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AND type = 'QueryFinish'
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AND current_database = currentDatabase()
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ORDER BY query_start_time DESC
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LIMIT 1;
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SET remote_filesystem_read_method='threadpool';
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SELECT * FROM test WHERE value LIKE '%abc%' ORDER BY value LIMIT 10 FORMAT Null;
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SET enable_filesystem_cache_on_write_operations = 1;
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TRUNCATE TABLE test;
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SELECT count() FROM test;
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SYSTEM DROP FILESYSTEM CACHE;
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INSERT INTO test SELECT * FROM generateRandom('key UInt32, value String') LIMIT 10000;
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SELECT 3, * FROM test LIMIT 10 FORMAT Null;
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SYSTEM FLUSH LOGS;
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SELECT query,
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ProfileEvents['CachedReadBufferReadFromSourceBytes'] > 0 as remote_fs_read,
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ProfileEvents['CachedReadBufferReadFromCacheBytes'] > 0 as remote_fs_cache_read,
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ProfileEvents['CachedReadBufferCacheWriteBytes'] > 0 as remote_fs_read_and_download
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FROM system.query_log
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WHERE query LIKE 'SELECT 3, * FROM test LIMIT%'
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AND type = 'QueryFinish'
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AND current_database = currentDatabase()
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ORDER BY query_start_time DESC
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LIMIT 1;
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DROP TABLE test;
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