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Sergey Kalashnikov commented on IGNITE-4509: -------------------------------------------- [~sergi.vladykin], [~vozerov] Can you please review the changes? > SQL: query with condition on affinity columns and without joins and > subqueries can be replaced with GET > ------------------------------------------------------------------------------------------------------- > > Key: IGNITE-4509 > URL: https://issues.apache.org/jira/browse/IGNITE-4509 > Project: Ignite > Issue Type: Task > Components: sql > Affects Versions: 1.8 > Reporter: Vladimir Ozerov > Assignee: Sergey Kalashnikov > Labels: performance, sql > Fix For: 2.1 > > > Simple SQL queries usually demonstrate negative scalability when more nodes > are added. > Consider the following query: > {code} > SELECT * FROM Person p > WHERE p.id = ? > {code} > If {{Person.id}} is affinity field, then query can be replaced with plain > {{IgniteCache.get}} or some specialized version of GET, which will return > only desired fields. This optimization will guarantee smooth scale with any > number of nodes. -- This message was sent by Atlassian JIRA (v6.3.15#6346)