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https://issues.apache.org/jira/browse/SPARK-29245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17002539#comment-17002539
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Xiao Li commented on SPARK-29245:
---------------------------------
Since JDK support is experimental, it is not a blocker of Spark 3.0. It only
affects JDK 11 users based on my understanding.
However, we should still fix it in 3.0 and let us target it to 3.0
> CCE during creating HiveMetaStoreClient
> ----------------------------------------
>
> Key: SPARK-29245
> URL: https://issues.apache.org/jira/browse/SPARK-29245
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Dongjoon Hyun
> Priority: Major
>
> From `master` branch build, when I try to connect to an external HMS, I hit
> the following.
> {code}
> 19/09/25 10:58:46 ERROR hive.log: Got exception: java.lang.ClassCastException
> class [Ljava.lang.Object; cannot be cast to class [Ljava.net.URI;
> ([Ljava.lang.Object; and [Ljava.net.URI; are in module java.base of loader
> 'bootstrap')
> java.lang.ClassCastException: class [Ljava.lang.Object; cannot be cast to
> class [Ljava.net.URI; ([Ljava.lang.Object; and [Ljava.net.URI; are in module
> java.base of loader 'bootstrap')
> at
> org.apache.hadoop.hive.metastore.HiveMetaStoreClient.<init>(HiveMetaStoreClient.java:200)
> at
> org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.<init>(SessionHiveMetaStoreClient.java:70)
> {code}
> With HIVE-21508, I can get the following.
> {code}
> Welcome to
> ____ __
> / __/__ ___ _____/ /__
> _\ \/ _ \/ _ `/ __/ '_/
> /___/ .__/\_,_/_/ /_/\_\ version 3.0.0-SNAPSHOT
> /_/
> Using Scala version 2.12.10 (OpenJDK 64-Bit Server VM, Java 11.0.4)
> Type in expressions to have them evaluated.
> Type :help for more information.
> scala> sql("show databases").show
> +--------------------+
> | databaseName|
> +--------------------+
> | ..... |
> ...
> {code}
> With 2.3.7-SNAPSHOT, the following basic tests are tested.
> - SHOW DATABASES / TABLES
> - DESC DATABASE / TABLE
> - CREATE / DROP / USE DATABASE
> - CREATE / DROP / INSERT / LOAD / SELECT TABLE
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