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| layout: docs |
| title: Enable Query Pushdown |
| categories: tutorial |
| permalink: /docs/tutorial/query_pushdown.html |
| since: v2.1 |
| --- |
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| ### Introduction |
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| If a query can not be answered by any cube, Kylin supports pushing down to SparkSql to query Hive data source. |
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| ### Enable Query Pushdown |
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| ``` |
| kylin.query.pushdown.runner-class-name=org.apache.kylin.query.pushdown.PushDownRunnerSparkImpl |
| ``` |
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| ### Do Query Pushdown |
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| After Query Pushdown is configured, user is allowed to do flexible queries to the imported tables without available cubes. |
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| If query is answered by backup engine, `Is Query Push-Down` is set to `true` in the log. |
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