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  1. ,

    You are not deploying the oracle driver with the application. Place the driver jars in a shared or library extension folder of your application server. (You should go with option one or two though

  2. ,

    This is thrown when the Java Virtual Machine (JVM) tries to load a particular class and the specified class cannot be found in the classpath. Make sure poi-ooxml library jar is added to your project's build path and you are using the latest version.

Solutions on the web

via Google Groups by Håvard Wahl Kongsgård, 2 years ago
via Apache's JIRA Issue Tracker by David Arthur, 1 year ago
Could not instantiate a region instance.
via Google Groups by Viral Bajaria, 2 years ago
via Google Groups by Omkar Joshi, 2 years ago
Could not instantiate a region instance.
java.lang.IllegalStateException: Could not instantiate a region instance. at org.apache.hadoop.hbase.regionserver.HRegion.newHRegion( at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion( at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion( at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process( at at java.util.concurrent.ThreadPoolExecutor$Worker.runTask( at java.util.concurrent.ThreadPoolExecutor$ at by: java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance( at java.lang.reflect.Constructor.newInstance( at org.apache.hadoop.hbase.regionserver.HRegion.newHRegion( ... 7 moreCaused by: java.lang.NoClassDefFoundError: kafka/common/NoBrokersForPartitionException at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors( at java.lang.Class.getConstructor0( at java.lang.Class.newInstance0( at java.lang.Class.newInstance( at org.apache.hadoop.hbase.coprocessor.CoprocessorHost.loadInstance( at org.apache.hadoop.hbase.coprocessor.CoprocessorHost.load( at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.loadTableCoprocessors( at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.<init>( at org.apache.hadoop.hbase.regionserver.HRegion.<init>( ... 11 moreCaused by: java.lang.ClassNotFoundException: kafka.common.NoBrokersForPartitionException at$ at Method) at at java.lang.ClassLoader.loadClass( at java.lang.ClassLoader.loadClass( ... 21 more