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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2020/08/13 05:14:00 UTC
[jira] [Commented] (SPARK-20680) Spark-sql do not support for void
column datatype of view
[ https://issues.apache.org/jira/browse/SPARK-20680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17176767#comment-17176767 ]
Apache Spark commented on SPARK-20680:
--------------------------------------
User 'ulysses-you' has created a pull request for this issue:
https://github.com/apache/spark/pull/29423
> Spark-sql do not support for void column datatype of view
> ---------------------------------------------------------
>
> Key: SPARK-20680
> URL: https://issues.apache.org/jira/browse/SPARK-20680
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.0, 2.1.1, 2.4.6, 3.0.0
> Reporter: Lantao Jin
> Assignee: Lantao Jin
> Priority: Major
> Fix For: 3.1.0
>
>
> Create a HIVE view:
> {quote}
> hive> create table bad as select 1 x, null z from dual;
> {quote}
> Because there's no type, Hive gives it the VOID type:
> {quote}
> hive> describe bad;
> OK
> x int
> z void
> {quote}
> In Spark2.0.x, the behaviour to read this view is normal:
> {quote}
> spark-sql> describe bad;
> x int NULL
> z void NULL
> Time taken: 4.431 seconds, Fetched 2 row(s)
> {quote}
> But in Spark2.1.x, it failed with SparkException: Cannot recognize hive type string: void
> {quote}
> spark-sql> describe bad;
> 17/05/09 03:12:08 INFO execution.SparkSqlParser: Parsing command: describe bad
> 17/05/09 03:12:08 INFO parser.CatalystSqlParser: Parsing command: int
> 17/05/09 03:12:08 INFO parser.CatalystSqlParser: Parsing command: void
> 17/05/09 03:12:08 ERROR thriftserver.SparkSQLDriver: Failed in [describe bad]
> org.apache.spark.SparkException: Cannot recognize hive type string: void
> at org.apache.spark.sql.hive.client.HiveClientImpl.org$apache$spark$sql$hive$client$HiveClientImpl$$fromHiveColumn(HiveClientImpl.scala:789)
> at org.apache.spark.sql.hive.client.HiveClientImpl$$anonfun$getTableOption$1$$anonfun$apply$11$$anonfun$7.apply(HiveClientImpl.scala:365)
> at org.apache.spark.sql.hive.client.HiveClientImpl$$anonfun$getTableOption$1$$anonfun$apply$11$$anonfun$7.apply(HiveClientImpl.scala:365)
> at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at scala.collection.Iterator$class.foreach(Iterator.scala:893)
> at scala.collection.AbstractIterator.foreach(Iterator.scala:1336)
> at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
> at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
> at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
> at scala.collection.AbstractTraversable.map(Traversable.scala:104)
> at org.apache.spark.sql.hive.client.HiveClientImpl$$anonfun$getTableOption$1$$anonfun$apply$11.apply(HiveClientImpl.scala:365)
> at org.apache.spark.sql.hive.client.HiveClientImpl$$anonfun$getTableOption$1$$anonfun$apply$11.apply(HiveClientImpl.scala:361)
> Caused by: org.apache.spark.sql.catalyst.parser.ParseException:
> DataType void() is not supported.(line 1, pos 0)
> == SQL ==
> void
> ^^^
> ... 61 more
> org.apache.spark.SparkException: Cannot recognize hive type string: void
> {quote}
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