[jira] [Assigned] (SPARK-24675) Rename table: validate existence of new location
[
https://issues.apache.org/jira/browse/SPARK-24675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apache Spark reassigned SPARK-24675:
Assignee: (was: Apache Spark)
> Rename table: validate existence of new location
>
>
> Key: SPARK-24675
> URL: https://issues.apache.org/jira/browse/SPARK-24675
> Project: Spark
> Issue Type: Improvement
> Components: SQL
>Affects Versions: 2.3.1
>Reporter: Gengliang Wang
>Priority: Major
>
> If table is renamed to a existing new location, data won't show up.
>
> scala> Seq("hello").toDF("a").write.format("parquet").saveAsTable("t")
> scala> sql("select * from t").show()
> +-+
> | a|
> +-+
> |hello|
> +-+
> scala> sql("alter table t rename to test")
> res2: org.apache.spark.sql.DataFrame = []
> scala> sql("select * from test").show()
> +---+
> | a|
> +---+
> +—+
>
> In Hive, if the new location exists, the renaming will fail even the location
> is empty.
> We should have the same validation in catalog, in case of unexpected bugs.
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[jira] [Assigned] (SPARK-24675) Rename table: validate existence of new location
[
https://issues.apache.org/jira/browse/SPARK-24675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apache Spark reassigned SPARK-24675:
Assignee: Apache Spark
> Rename table: validate existence of new location
>
>
> Key: SPARK-24675
> URL: https://issues.apache.org/jira/browse/SPARK-24675
> Project: Spark
> Issue Type: Improvement
> Components: SQL
>Affects Versions: 2.3.1
>Reporter: Gengliang Wang
>Assignee: Apache Spark
>Priority: Major
>
> If table is renamed to a existing new location, data won't show up.
>
> scala> Seq("hello").toDF("a").write.format("parquet").saveAsTable("t")
> scala> sql("select * from t").show()
> +-+
> | a|
> +-+
> |hello|
> +-+
> scala> sql("alter table t rename to test")
> res2: org.apache.spark.sql.DataFrame = []
> scala> sql("select * from test").show()
> +---+
> | a|
> +---+
> +—+
>
> In Hive, if the new location exists, the renaming will fail even the location
> is empty.
> We should have the same validation in catalog, in case of unexpected bugs.
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