6 Commits

Author	SHA1	Message	Date
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
Ivan Lezhankin	d42d543ee9	Merge branch 'master' into pytest	2019-06-10 18:25:38 +03:00
Ivan Lezhankin	fd6fbc9be8	Fix dict_get.sql test	2019-06-10 15:22:57 +03:00
Ivan Lezhankin	f24a4ef9a4	Fix some tests	2019-06-07 18:41:24 +03:00
proller	88f3a48afa	Fixes for parallel test run (#5506)	2019-06-03 20:36:27 +03:00
chertus	414209d076	dictGet test improvements	2019-05-29 17:16:20 +03:00