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10 Commits

Author SHA1 Message Date
Jonathan Wei bc33b68b51 Use GroupBy V2 as default (#3953) 
* Use GroupBy V2 as default

* Remove unused line

* Change assert to exception propagation
 2017-02-18 07:40:40 -08:00
Jonathan Wei 182261f713 Allow configurable temp directory for query processing (#3893) 2017-02-02 10:22:28 -08:00
Gian Merlino 4cc39b2ee7 Alternative groupBy strategy. (#2998) 
This patch introduces a GroupByStrategy concept and two strategies: "v1"
is the current groupBy strategy and "v2" is a new one. It also introduces
a merge buffers concept in DruidProcessingModule, to try to better
manage memory used for merging.

Both of these are described in more detail in #2987.

There are two goals of this patch:

1. Make it possible for historical/realtime nodes to return larger groupBy
   result sets, faster, with better memory management.
2. Make it possible for brokers to merge streams when there are no order-by
   columns, avoiding materialization.

This patch does not do anything to help with memory management on the broker
when there are order-by columns or when there are nested queries. That could
potentially be done in a future patch.
 2016-06-24 18:06:09 -07:00
binlijin 9151099e08 add document for druid.segmentCache.numBootstrapThreads (#2872) 2016-04-22 12:06:08 +08:00
Himanshu Gupta ca5de3f583 only allow lowering maxResults and maxIntermediateRows from groupBy query context 2016-03-08 15:03:59 -06:00
Himanshu Gupta 099acb4966 allow groupBy max[Intermediate]Rows limit be overridable by context 2016-03-07 15:22:41 -06:00
Himanshu Gupta b40c342cd1 make Global stupid pool cache size configurable 2016-02-05 14:18:06 -06:00
Charles Allen ecdafa87c5 Make PrioritizedExecutorService optionally FIFO 2015-10-27 14:16:22 -07:00
Xavier Léauté b11c0859e8 hybrid l1/l2 cache to combine local and remote cache 2015-10-06 14:32:08 -07:00
Xavier Léauté d2346b6834 shorten links and file names 
* remove redundant parts in file names
* delete unsupported "Druid-Personal-Demo-Cluster"
 2015-05-29 20:55:42 -05:00