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Rename yandexConsistentHash to kostikConsistentHash
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@ -15,7 +15,7 @@
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```
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```
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┌─name─────────────────────┬─is_aggregate─┬─case_insensitive─┬─alias_to─┐
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┌─name─────────────────────┬─is_aggregate─┬─case_insensitive─┬─alias_to─┐
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│ sumburConsistentHash │ 0 │ 0 │ │
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│ sumburConsistentHash │ 0 │ 0 │ │
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│ yandexConsistentHash │ 0 │ 0 │ │
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│ kostikConsistentHash │ 0 │ 0 │ │
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│ demangle │ 0 │ 0 │ │
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│ demangle │ 0 │ 0 │ │
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│ addressToLine │ 0 │ 0 │ │
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│ addressToLine │ 0 │ 0 │ │
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│ JSONExtractRaw │ 0 │ 0 │ │
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│ JSONExtractRaw │ 0 │ 0 │ │
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@ -7,9 +7,9 @@ namespace DB
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{
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{
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/// An O(1) time and space consistent hash algorithm by Konstantin Oblakov
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/// An O(1) time and space consistent hash algorithm by Konstantin Oblakov
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struct YandexConsistentHashImpl
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struct KostikConsistentHashImpl
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{
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{
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static constexpr auto name = "yandexConsistentHash";
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static constexpr auto name = "kostikConsistentHash";
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using HashType = UInt64;
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using HashType = UInt64;
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/// Actually it supports UInt64, but it is efficient only if n <= 32768
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/// Actually it supports UInt64, but it is efficient only if n <= 32768
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@ -23,12 +23,11 @@ struct YandexConsistentHashImpl
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}
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}
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};
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};
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using FunctionYandexConsistentHash = FunctionConsistentHashImpl<YandexConsistentHashImpl>;
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using FunctionKostikConsistentHash = FunctionConsistentHashImpl<KostikConsistentHashImpl>;
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void registerFunctionYandexConsistentHash(FunctionFactory & factory)
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void registerFunctionKostikConsistentHash(FunctionFactory & factory)
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{
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{
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factory.registerFunction<FunctionYandexConsistentHash>();
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factory.registerFunction<FunctionKostikConsistentHash>();
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}
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}
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}
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}
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@ -2,12 +2,12 @@ namespace DB
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{
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{
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class FunctionFactory;
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class FunctionFactory;
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void registerFunctionYandexConsistentHash(FunctionFactory & factory);
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void registerFunctionKostikConsistentHash(FunctionFactory & factory);
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void registerFunctionJumpConsistentHash(FunctionFactory & factory);
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void registerFunctionJumpConsistentHash(FunctionFactory & factory);
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void registerFunctionsConsistentHashing(FunctionFactory & factory)
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void registerFunctionsConsistentHashing(FunctionFactory & factory)
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{
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{
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registerFunctionYandexConsistentHash(factory);
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registerFunctionKostikConsistentHash(factory);
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registerFunctionJumpConsistentHash(factory);
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registerFunctionJumpConsistentHash(factory);
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}
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}
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@ -1459,7 +1459,7 @@
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"xor"
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"xor"
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"xxHash32"
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"xxHash32"
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"xxHash64"
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"xxHash64"
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"yandexConsistentHash"
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"kostikConsistentHash"
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"YEAR"
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"YEAR"
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"yearweek"
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"yearweek"
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"yesterday"
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"yesterday"
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@ -26,7 +26,7 @@
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"toUnixTimestamp64Nano"
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"toUnixTimestamp64Nano"
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"toUnixTimestamp64Micro"
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"toUnixTimestamp64Micro"
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"jumpConsistentHash"
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"jumpConsistentHash"
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"yandexConsistentHash"
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"kostikConsistentHash"
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"addressToSymbol"
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"addressToSymbol"
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"toJSONString"
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"toJSONString"
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"JSON_VALUE"
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"JSON_VALUE"
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@ -67,10 +67,10 @@ def started_cluster():
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insert into data (key) select * from numbers(10);
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insert into data (key) select * from numbers(10);
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create table if not exists dist_one as data engine=Distributed(one_shard, currentDatabase(), data, key);
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create table if not exists dist_one as data engine=Distributed(one_shard, currentDatabase(), data, key);
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create table if not exists dist_one_over_dist as data engine=Distributed(one_shard, currentDatabase(), dist_one, yandexConsistentHash(key, 2));
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create table if not exists dist_one_over_dist as data engine=Distributed(one_shard, currentDatabase(), dist_one, kostikConsistentHash(key, 2));
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create table if not exists dist_two as data engine=Distributed(two_shards, currentDatabase(), data, key);
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create table if not exists dist_two as data engine=Distributed(two_shards, currentDatabase(), data, key);
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create table if not exists dist_two_over_dist as data engine=Distributed(two_shards, currentDatabase(), dist_two, yandexConsistentHash(key, 2));
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create table if not exists dist_two_over_dist as data engine=Distributed(two_shards, currentDatabase(), dist_two, kostikConsistentHash(key, 2));
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"""
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"""
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)
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)
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yield cluster
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yield cluster
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@ -3,7 +3,7 @@
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<substitution>
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<substitution>
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<name>hash_func</name>
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<name>hash_func</name>
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<values>
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<values>
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<value>yandexConsistentHash</value>
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<value>kostikConsistentHash</value>
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<value>jumpConsistentHash</value>
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<value>jumpConsistentHash</value>
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</values>
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</values>
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</substitution>
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</substitution>
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@ -1,6 +1,6 @@
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-- Tags: no-fasttest
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-- Tags: no-fasttest
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SELECT jumpConsistentHash(1, 1), jumpConsistentHash(42, 57), jumpConsistentHash(256, 1024), jumpConsistentHash(3735883980, 1), jumpConsistentHash(3735883980, 666), jumpConsistentHash(16045690984833335023, 255);
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SELECT jumpConsistentHash(1, 1), jumpConsistentHash(42, 57), jumpConsistentHash(256, 1024), jumpConsistentHash(3735883980, 1), jumpConsistentHash(3735883980, 666), jumpConsistentHash(16045690984833335023, 255);
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SELECT yandexConsistentHash(16045690984833335023, 1), yandexConsistentHash(16045690984833335023, 2), yandexConsistentHash(16045690984833335023, 3), yandexConsistentHash(16045690984833335023, 4), yandexConsistentHash(16045690984833335023, 173), yandexConsistentHash(16045690984833335023, 255);
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SELECT kostikConsistentHash(16045690984833335023, 1), kostikConsistentHash(16045690984833335023, 2), kostikConsistentHash(16045690984833335023, 3), kostikConsistentHash(16045690984833335023, 4), kostikConsistentHash(16045690984833335023, 173), kostikConsistentHash(16045690984833335023, 255);
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SELECT jumpConsistentHash(intHash64(number), 787) FROM system.numbers LIMIT 1000000, 2;
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SELECT jumpConsistentHash(intHash64(number), 787) FROM system.numbers LIMIT 1000000, 2;
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SELECT yandexConsistentHash(16045690984833335023+number-number, 120) FROM system.numbers LIMIT 1000000, 2;
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SELECT kostikConsistentHash(16045690984833335023+number-number, 120) FROM system.numbers LIMIT 1000000, 2;
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@ -1 +1 @@
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SELECT yandexConsistentHash(-1, 40000); -- { serverError 36 }
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SELECT kostikConsistentHash(-1, 40000); -- { serverError 36 }
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