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Fix test_system_merges by using mutations_sync=1
After early_constant_folding started to ignore not only ignore(), but all functions with isSuitableForConstantFolding() == false, there became more sleep(2) calls for this test: - MergeTreeDataSelectExecutor::readFromParts -> DB::KeyCondition::KeyCondition - MergeTreeDataMergerMutator::mutatePartToTemporaryPart -> DB::isStorageTouchedByMutations -> FilterTransform::transform - MergeTreeDataMergerMutator::mutatePartToTemporaryPart -> DB::MergeTreeDataMergerMutator::mutateAllPartColumns -> FilterTransform::transform While before it was optimized to 0 during WHERE analysis.
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@ -134,7 +134,9 @@ def test_mutation_simple(started_cluster, replicated):
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result_part = "all_{}_{}_0_{}".format(starting_block, starting_block, starting_block + 1)
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def alter():
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node1.query("ALTER TABLE {name} UPDATE a = 42 WHERE sleep(2) OR 1".format(name=name))
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node1.query("ALTER TABLE {name} UPDATE a = 42 WHERE sleep(2) OR 1".format(name=name), settings={
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'mutations_sync': 1,
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})
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t = threading.Thread(target=alter)
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t.start()
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@ -159,8 +161,6 @@ def test_mutation_simple(started_cluster, replicated):
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]
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t.join()
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time.sleep(1.5)
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assert node_check.query("SELECT * FROM system.merges WHERE table = '{name}'".format(name=table_name)) == ""
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finally:
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