Aggregator support prefetch and new hasher

[guo-shaoge]

What problem does this PR solve?

Issue Number: close #9680

Problem Summary:

What is changed and how it works?

1. Add new hash func
2. Support prefetch for HashTable and StringHashTable
   1. For StringHashTable, emplace will touch the sepcific submap instead of using StringHashMap method. Because it's easier to implement prefetch.

Benchmark

workloads: TPCH-50G
queries:

-- Q1-1: key_int64; distinct rate: 10M/300M; HashMap
explain analyze select /*+ mpp_1phase_agg() */ sum(l_quantity), l_partkey from lineitem group by l_partkey limit 1 offset 9000000;
-- Q1-2: key_int64; 75M/300M; HashMp
explain analyze select /*+ mpp_1phase_agg() */ sum(l_quantity), l_orderkey from lineitem group by  L_orderkey limit 1 offset 70000000;
-- Q1-3: key_int64; 7/300M; HashMap
explain analyze select /*+ mpp_1phase_agg() */ sum(l_quantity), l_linenumber from lineitem group by  l_linenumber;

-- Q2-1: one_key_strbinpadding_phmap; 2/300M; StringHashMap
explain analyze select /*+ mpp_1phase_agg() */ sum(l_discount), l_linestatus from lineitem group by l_linestatus;
-- Q2-2: one_key_strbinpadding; 104M/300M; StringHashMap
explain analyze select /*+ mpp_1phase_agg() */ sum(l_discount) from lineitem group by l_comment limit 1 offset 100000000;


-- Q3-1: key_serialized as group by method;  33/300M; HashMap with StringRef key
explain analyze select /*+ mpp_1phase_agg() */ sum(l_discount), l_returnflag from lineitem group by l_returnflag, l_discount;
-- Q3-2: key_serialized as group by method; 77M/300M; HashMap with StringRef key
explain analyze select /*+ mpp_1phase_agg() */ sum(l_discount), l_returnflag from lineitem group by l_returnflag, l_discount, l_extendedprice limit 1 offset 75000000;


-- Q4-1: two_keys_num64_strbinpadding: 21/300M; HashMap with StringRef key
explain analyze select /*+ mpp_1phase_agg() */ sum(l_discount) from lineitem group by l_returnflag, L_LINENUMBER;
-- Q4-2: two_keys_num64_strbinpadding; 29.9M/300M; HashMap with StringRef key
explain analyze select /*+ mpp_1phase_agg() */ sum(l_discount), l_partkey from lineitem group by l_returnflag, l_partkey limit 1 offset 29000000;


-- Q5-1: keys_128; 77/300M; HashMap with UInt128 key
explain analyze select /*+ mpp_1phase_agg() */ sum(l_linenumber), l_discount from lineitem group by l_linenumber, l_discount;
-- Q5-2: keys_128; 5M/300M; HashMap with UInt128 key
explain analyze select /*+ mpp_1phase_agg() */ sum(l_linenumber), l_discount from lineitem group by l_suppkey, l_discount limit 1 offset 4000000;


-- Q6-1: key_string; 4/300M; StringHashMap
 explain analyze select /*+ mpp_1phase_agg() */ sum(l_quantity), l_shipinstruct from lineitem group by l_shipinstruct;
 
 -- Q7-1: keys_256; 290M/300M; HashMap;
 explain analyze select /*+ mpp_1phase_agg() */ sum(l_suppkey) from lineitem group by l_suppkey, l_tax, l_discount, l_partkey limit 1;

Results:

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

None

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[guo-shaoge]

/retest