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https://issues.apache.org/jira/browse/SPARK-23831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16685629#comment-16685629
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Michael Armbrust commented on SPARK-23831:
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Why was it reverted?
> Add org.apache.derby to IsolatedClientLoader
> --------------------------------------------
>
> Key: SPARK-23831
> URL: https://issues.apache.org/jira/browse/SPARK-23831
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Yuming Wang
> Priority: Major
>
> Add org.apache.derby to IsolatedClientLoader，otherwise it may throw an
> exception:
> {noformat}
> [info] Cause: java.sql.SQLException: Failed to start database 'metastore_db'
> with class loader
> org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1@2439ab23, see
> the next exception for details.
> [info] at
> org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
> [info] at
> org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
> [info] at org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
> [info] at org.apache.derby.impl.jdbc.EmbedConnection.bootDatabase(Unknown
> Source)
> [info] at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
> [info] at org.apache.derby.jdbc.InternalDriver$1.run(Unknown Source)
> {noformat}
> How to reproduce:
> {noformat}
> sed 's/HiveExternalCatalogSuite/HiveExternalCatalog2Suite/g'
> sql/hive/src/test/scala/org/apache/spark/sql/hive/HiveExternalCatalogSuite.scala
> >
> sql/hive/src/test/scala/org/apache/spark/sql/hive/HiveExternalCatalog2Suite.scala
> build/sbt -Phive "hive/test-only *.HiveExternalCatalogSuite
> *.HiveExternalCatalog2Suite"
> {noformat}
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