Hadoop Hive - Hadoop Hive- Joins
join_table: table_reference JOIN table_factor [join_condition] | table_reference {LEFT|RIGHT|FULL} [OUTER] JOIN table_reference join_condition | table_reference LEFT SEMI JOIN table_reference join_condition table_reference: table_factor | join_table table_factor: tbl_name [alias] | table_subquery alias | ( table_references ) join_condition: ON equality_expression ( AND equality_expression )* equal
Join optimization in hive
[Harvard CS264] 08b - MapReduce and Hadoop (Zak Stone, Harvard)npinto
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Finding Optimal Join Tree forMulti-Join Stream Queries in a Production System - IEEE Conference Publication
Processing Data-Stream Join Aggregates Using Skimmed Sketches
Stream window join: tracking moving objects in sensor-network databases - IEEE Conference Publication
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MySQLにおけるJOINのチューニングの定石
Join Strategies in Hive Liyin Tang, Namit Jain Software Engineer Facebook 1 Common Join 2 Map Join 3 Auto MapJoin 4 Bucket Map Join 5 Bucket Sort Merge Map Join 6 Skew Join Agenda Common Join Task A Mapper Mapper Table X Mapper … … Mapper Mapper… Ma
