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[SPARK-32095][SQL] Update documentation to reflect usage of updated statistics #28925

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[SPARK-32095][SQL] Update documentation to reflect usage of updated statistics #28925

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8e0d2ca
[SPARK-32095][SQL] Update docs on SupportsReportStatistics
Jun 24, 2020
9b945ba
add missing word
Jun 24, 2020
148a89f
update first sentence
Jun 25, 2020
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6 changes: 3 additions & 3 deletions sql/catalyst/src/main/java/org/apache/spark/sql/connector/read/SupportsReportStatistics.java
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Expand Up @@ -23,9 +23,9 @@
* A mix in interface for {@link Scan}. Data sources can implement this interface to
* report statistics to Spark.
*
* As of Spark 2.4, statistics are reported to the optimizer before any operator is pushed to the
* data source. Implementations that return more accurate statistics based on pushed operators will
* not improve query performance until the planner can push operators before getting stats.
* As of Spark 3.0, statistics are reported to the optimizer after operators are pushed to the
* data source. Implementations may return more accurate statistics based on pushed operators
* which may improve query performance by providing better information to the optimizer.
*
* @since 3.0.0
*/
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