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https://issues.apache.org/jira/browse/SPARK-29245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16939583#comment-16939583
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Dongjoon Hyun commented on SPARK-29245:
---------------------------------------
Like we missed this last time, there might be more code paths which is
unchecked. Since this one is the fist step to connect to remote HMS (which is
also the main use cases), it seems that no one tried to use this
feature(SPARK-28684) until now.
> 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
> Environment: CDH 6.3
> Reporter: Dongjoon Hyun
> Priority: Blocker
>
> 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}
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