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https://issues.apache.org/jira/browse/SPARK-27439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16821977#comment-16821977
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Liang-Chi Hsieh commented on SPARK-27439:
-----------------------------------------
One possible issue I'm aware of is, {{df.explain}} shows a inconsistent plan,
compared with the evaluated result of the dataset. I think it is confused for
users when they saw it. I made a small PR for that.
> createOrReplaceTempView cannot update old dataset
> -------------------------------------------------
>
> Key: SPARK-27439
> URL: https://issues.apache.org/jira/browse/SPARK-27439
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.4.1
> Reporter: xjl
> Priority: Major
>
> {code:java}
> SparkSession spark = SparkSession
> .builder()
> .appName("app").enableHiveSupport().master("local[4]")
> .getOrCreate();
> spark.sql("select * from default.t1").createOrReplaceTempView("tmp001");
> Dataset<Row> hiveTable = spark.sql("select * from tmp001");
> spark.sql("select * from default.t2").createOrReplaceTempView("tmp001");
> hiveTable.show();
>
> }
> {code}
> hiveTable show the value of t1 but not t2
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