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97 Commits

Author SHA1 Message Date
Alexey Milovidov
2311c69d53 dbms: development of memory efficient distributed aggregation method [#METR-17536]. 2015-09-07 10:40:14 +03:00
Alexey Milovidov
5b0b5dc9cf dbms: added memory-efficient mode of distributed aggregation [#METR-17536]. 2015-07-31 02:41:02 +03:00
Alexey Milovidov
d5a69e8e31 dbms: fixed error with GROUP BY empty arrays [#METR-17361]. 2015-07-18 07:18:14 +03:00
Alexey Arno
7d00e235ea Merge 2015-04-16 17:27:56 +03:00
Alexey Milovidov
05401b901b dbms: better exception safety [#METR-15530]. 2015-03-23 04:10:06 +03:00
Alexey Milovidov
026670c4ec dbms: fixed error with exception safety [#METR-15451]. 2015-03-15 14:30:26 +03:00
Alexey Milovidov
1d7d1051a2 dbms: fixed error [#METR-15451]. 2015-03-12 05:22:55 +03:00
Alexey Milovidov
82e782d6f9 dbms: fixed error in prev. revision [#METR-2944]. 2015-02-22 21:02:54 +03:00
Alexey Milovidov
dc6259d931 dbms: added aggregation method 'concat' - performance improvement in generic case [#METR-2944]. 2015-02-22 19:09:16 +03:00
Alexey Milovidov
bbd48f8921 dbms: Aggregator: added specialization for many (up to 256 bit) fixed-size keys (up to 3x performance improvement) [#METR-2944]. 2015-02-22 08:53:16 +03:00
Alexey Milovidov
b6f4d3d3e8 dbms: added setting 'group_by_two_level_threshold' for fine tuning [#METR-2944]. 2015-02-22 08:51:16 +03:00
Alexey Milovidov
ea113f138f dbms: preparation [#METR-2944]. 2015-02-13 04:17:44 +03:00
Alexey Milovidov
af27e06238 Fixed errors in clang (part 4) [#METR-2807]. 2015-01-21 07:23:22 +03:00
Alexey Milovidov
819f13801d dbms: fixed error with WITH TOTALS and group_by_overflow_mode [#METR-14604]. 2015-01-15 22:29:37 +03:00
Alexey Milovidov
ad5fdc0e62 dbms: compiled aggregator: development [#METR-2944]. 2015-01-13 06:03:45 +03:00
Alexey Milovidov
818d5ed0c5 dbms: compiled aggregator: development [#METR-2944]. 2015-01-13 04:57:22 +03:00
Alexey Milovidov
882bf3ea75 dbms: compiled aggregator: development [#METR-2944]. 2015-01-11 05:00:26 +03:00
Alexey Milovidov
19f1bff25d dbms: dynamic compiled aggregator: development [#METR-2944]. 2015-01-11 03:57:21 +03:00
Alexey Milovidov
a7a2712630 dbms: compiled aggregator: development [#METR-2944]. 2015-01-10 05:30:03 +03:00
Alexey Milovidov
9225adb3fc dbms: tiny modifications [#METR-2944]. 2015-01-08 21:52:48 +03:00
Alexey Milovidov
6212e7080b dbms: more scalable aggregator: development [#METR-2944]. 2015-01-03 09:49:32 +03:00
Alexey Milovidov
7c292a9956 dbms: more scalable aggregator: development [#METR-2944]. 2015-01-03 08:39:21 +03:00
Alexey Milovidov
221efeb82a dbms: more scalable aggregator: development [#METR-2944]. 2015-01-03 06:18:49 +03:00
Alexey Milovidov
a7eacd1269 dbms: more scalable aggregator: development [#METR-2944]. 2015-01-02 06:50:14 +03:00
Alexey Milovidov
acbe19fd84 dbms: more scalable aggregator: development [#METR-2944]. 2015-01-02 06:16:28 +03:00
Alexey Milovidov
fd8b2b5261 dbms: Aggregator: preparation [#METR-2944]. 2015-01-02 03:35:33 +03:00
Alexey Milovidov
e9232fc2fc dbms: more scalable aggregator: development [#METR-2944]. 2014-12-30 21:04:53 +03:00
Alexey Milovidov
716fad23d0 dbms: more scalable aggregator: development [#METR-2944]. 2014-12-30 15:58:02 +03:00
Alexey Milovidov
01526513ae dbms: more scalable aggregator: development [#METR-2944]. 2014-12-30 14:27:58 +03:00
Alexey Milovidov
f9f0682033 dbms: more scalable aggregator: development [#METR-2944]. 2014-12-30 13:16:23 +03:00
Alexey Milovidov
b0f5ce86a3 dbms: more scalable aggregator: development [#METR-2944]. 2014-12-27 08:43:13 +03:00
Alexey Milovidov
da1974bbf3 dbms: more scalable aggregator: development [#METR-2944]. 2014-12-25 23:56:01 +03:00
Alexey Milovidov
cf3812532e dbms: more scalable aggregator: development [#METR-2944]. 2014-12-25 23:18:01 +03:00
Alexey Milovidov
ec08b393de dbms: tiny improvement [#METR-2944]. 2014-11-01 02:20:18 +03:00
Alexey Milovidov
37e599934f dbms: further [#METR-2944]. 2014-10-29 05:35:16 +03:00
Alexey Milovidov
425263970f dbms: improved performance of aggregation by one numeric key (up to: 2x for UInt8, 5x for UInt16, 1.1x for UInt32, UInt64) [#METR-2944]. 2014-10-29 04:18:50 +03:00
Alexey Milovidov
842f04db1f dbms: preparation [#METR-2944]. 2014-08-24 11:17:50 +04:00
Sergey Fedorov
4fe8f37e03 Merge 2014-05-28 19:00:08 +04:00
Alexey Milovidov
0d92614971 dbms: fixed wrong code [#METR-10894]. 2014-05-23 04:35:49 +04:00
Sergey Fedorov
19d17ceb6c dbms: bool array instead of miltiple checking for final aggregate functions [METR-10894] 2014-05-22 18:22:54 +04:00
Alexey Milovidov
7f2d738498 dbms: fixed segfault in case of memory limit exceeded [#METR-11160]. 2014-05-19 23:41:56 +04:00
Alexey Milovidov
b5eb465f84 dbms: preparation [#METR-2944]. 2014-05-10 09:16:23 +04:00
Alexey Milovidov
95827e2dc2 dbms: improved performance of aggregation by string key [#METR-2944]. 2014-05-10 06:42:45 +04:00
Alexey Milovidov
82a44f8eec dbms: tiny improved performance of aggregation [#METR-2944]. 2014-05-10 05:37:12 +04:00
Alexey Milovidov
47afe8bd9c dbms: Aggregator: decomposed code to easier trying more aggregation methods; performance is suddenly improved up to 25%; fixed memory leak when exception while aggregating by KEYS_128 method [#METR-2944]. 2014-05-10 04:31:22 +04:00
Alexey Milovidov
8232983714 dbms: unified hash tables: development [#METR-2944]. 2014-04-28 05:48:24 +04:00
Alexey Milovidov
63cff6a5a4 Improvement [#METR-2807]. 2014-04-08 11:58:53 +04:00
Alexey Milovidov
5ca21127c7 Improvement [#METR-2807]. 2014-04-08 11:31:51 +04:00
Michael Kolupaev
262ffcd74b Fixed parametric aggregate functions in totals. [#METR-10566] 2014-03-25 22:16:40 +04:00
Michael Kolupaev
04f0056b0a clickhouse: totals mode: development. [#METR-9365] 2014-02-27 16:53:38 +04:00