Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/17938#discussion_r116371598 --- Diff: docs/sql-programming-guide.md --- @@ -581,6 +581,113 @@ Starting from Spark 2.1, persistent datasource tables have per-partition metadat Note that partition information is not gathered by default when creating external datasource tables (those with a `path` option). To sync the partition information in the metastore, you can invoke `MSCK REPAIR TABLE`. +### Bucketing, Sorting and Partitioning + +For file-based data source it is also possible to bucket and sort or partition the output. +Bucketing and sorting is applicable only to persistent tables: + +<div class="codetabs"> + +<div data-lang="scala" markdown="1"> +{% include_example write_sorting_and_bucketing scala/org/apache/spark/examples/sql/SQLDataSourceExample.scala %} +</div> + +<div data-lang="java" markdown="1"> +{% include_example write_sorting_and_bucketing java/org/apache/spark/examples/sql/JavaSQLDataSourceExample.java %} +</div> + +<div data-lang="python" markdown="1"> +{% include_example write_sorting_and_bucketing python/sql/datasource.py %} +</div> + +<div data-lang="sql" markdown="1"> + +{% highlight sql %} + +CREATE TABLE users_bucketed_by_name( + name STRING, + favorite_color STRING, + favorite_NUMBERS array<integer> +) USING parquet +CLUSTERED BY(name) INTO 42 BUCKETS; --- End diff -- To be consistent with the example in the other APIs, it is missing the `SORTED BY` clause.
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org