Yuming Wang created SPARK-29268:
-----------------------------------

             Summary: Failed to start spark-sql when using Derby metastore and 
isolatedLoader is enabled
                 Key: SPARK-29268
                 URL: https://issues.apache.org/jira/browse/SPARK-29268
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.4.4, 2.3.4, 3.0.0
            Reporter: Yuming Wang


How to reproduce:
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bin/spark-sql --conf spark.sql.hive.metastore.version=2.1 --conf 
spark.sql.hive.metastore.jars=maven
{noformat}
Logs:
{noformat}
...
Caused by: java.sql.SQLException: Failed to start database 'metastore_db' with 
class loader 
org.apache.spark.sql.hive.client.IsolatedClientLoader$$anon$1@15a591d9, see the 
next exception for details.
        at 
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
        at 
org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown
 Source)
        ... 108 more
Caused by: java.sql.SQLException: Another instance of Derby may have already 
booted the database /root/spark-2.3.4-bin-hadoop2.7/metastore_db.
        at 
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
        at 
org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown
 Source)
        at 
org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source)
        at org.apache.derby.impl.jdbc.Util.generateCsSQLException(Unknown 
Source)
        ... 105 more
Caused by: ERROR XSDB6: Another instance of Derby may have already booted the 
database /root/spark-2.3.4-bin-hadoop2.7/metastore_db.
...
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