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73676f5022
* simplify reading in order of sorting key
* add perf test for reading many parts
* Revert "simplify reading in order of sorting key"
This reverts commit 7267d7c46e.
* add threshold for preliminary merge for reading in order
* better threshold
* limit threads in test
33 lines
1.5 KiB
XML
33 lines
1.5 KiB
XML
<test>
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<settings>
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<optimize_aggregation_in_order>1</optimize_aggregation_in_order>
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<optimize_read_in_order>1</optimize_read_in_order>
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<max_partitions_per_insert_block>200</max_partitions_per_insert_block>
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<max_threads>8</max_threads>
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</settings>
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<substitutions>
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<substitution>
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<name>table</name>
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<values>
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<value>mt_20_parts</value>
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<value>mt_200_parts</value>
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</values>
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</substitution>
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</substitutions>
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<create_query>CREATE TABLE mt_20_parts(id UInt32, val1 UInt32, val2 UInt32) ENGINE = MergeTree ORDER BY val1 PARTITION BY id % 20</create_query>
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<create_query>CREATE TABLE mt_200_parts(id UInt32, val1 UInt32, val2 UInt32) ENGINE = MergeTree ORDER BY val1 PARTITION BY id % 200</create_query>
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<fill_query>INSERT INTO mt_20_parts SELECT number, rand() % 10000, rand() FROM numbers_mt(100000000)</fill_query>
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<fill_query>INSERT INTO mt_200_parts SELECT number, rand() % 10000, rand() FROM numbers_mt(100000000)</fill_query>
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<fill_query>OPTIMIZE TABLE mt_20_parts FINAL</fill_query>
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<fill_query>OPTIMIZE TABLE mt_200_parts FINAL</fill_query>
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<query>SELECT val2 FROM {table} ORDER BY val1 LIMIT 100 FORMAT Null</query>
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<query>SELECT val2 FROM {table} ORDER BY val1 LIMIT 100000 FORMAT Null</query>
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<query>SELECT sum(val2) FROM {table} GROUP BY val1 FORMAT Null</query>
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<drop_query>DROP TABLE IF EXISTS {table}</drop_query>
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</test>
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