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Merge branch 'pull-4277'

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This commit is contained in:
Alexey Milovidov 2020-05-18 09:19:23 +03:00
commit daeaa07c90
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tests/queries/0_stateless/leak_when_memory_limit_exceeded.sql Normal file
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-- max_memory_usage = 10000000000 (10 GB default)
-- Intel® Xeon® E5-1650 v3 Hexadcore 128 GB DDR4 ECC
-- Estimated time: ~ 250 seconds
-- Read rows: ~ 272 000 000
SELECT
key,
uniqState(uuid_1) uuid_1_st,
uniqState(uuid_2) uuid_2_st,
uniqState(uuid_3) uuid_3_st
FROM (
SELECT
rand64() value,
toString(value) value_str,
UUIDNumToString(toFixedString(substring(value_str, 1, 16), 16)) uuid_1, -- Any UUID
UUIDNumToString(toFixedString(substring(value_str, 2, 16), 16)) uuid_2, -- More memory
UUIDNumToString(toFixedString(substring(value_str, 3, 16), 16)) uuid_3, -- And more memory
modulo(value, 5000000) key -- Cardinality in my case
FROM numbers(550000000)
)
GROUP BY
key
LIMIT 100;