ClickHouse/dbms/tests/config
Azat Khuzhin 420089c301
Add new dictionary layout (sparse_hashed) that is more memory efficient
With this new layout, sparsehash will be used over default HashMap,
sparsehash is more memory efficient but it is also slower.

So in a nutshell:
- HashMap uses ~2x more memory then sparse_hash_map
- HashMap ~2-2.5x faster then sparse_hash_map
(tested on lots of input, and the most close to production was
dictionary with 600KK hashes and UInt16 as value)

TODO:
- fix allocated memory calculation
- getBufferSizeInBytes/getBufferSizeInCells interface
- benchmarks

v0: replace HashMap with google::sparse_hash_map
v2: use google::sparse_hash_map only when <sparse> isset to true
v3: replace attributes with different layout
v4: use ch hash over std::hash
2019-09-21 02:22:40 +03:00
..
decimals_dictionary.xml Fix dict_get.sql test 2019-06-10 15:22:57 +03:00
ints_dictionary.xml Add new dictionary layout (sparse_hashed) that is more memory efficient 2019-09-21 02:22:40 +03:00
listen.xml
log_queries.xml
metric_log.xml Add metric log 2019-08-16 11:19:13 +03:00
part_log.xml
query_masking_rules.xml configs for query masking rules tests 2019-07-15 16:53:16 +02:00
readonly.xml
strings_dictionary.xml Fix dict_get.sql test 2019-06-10 15:22:57 +03:00
text_log.xml changes after review + update config + resolve build fail 2019-07-23 11:22:38 +03:00
zookeeper.xml Using testkeeper in tests 2019-06-16 02:35:12 +03:00