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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(HRegion.java:3595) at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:3733) at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:332) at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:108) at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:169) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680)Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.apache.hadoop.hbase.regionserver.HRegion.newHRegion(HRegion.java:3592) ... 7 moreCaused by: java.lang.NoClassDefFoundError: kafka/common/NoBrokersForPartitionException at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389) at java.lang.Class.getConstructor0(Class.java:2699) at java.lang.Class.newInstance0(Class.java:326) at java.lang.Class.newInstance(Class.java:308) at org.apache.hadoop.hbase.coprocessor.CoprocessorHost.loadInstance(CoprocessorHost.java:254) at org.apache.hadoop.hbase.coprocessor.CoprocessorHost.load(CoprocessorHost.java:227) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.loadTableCoprocessors(RegionCoprocessorHost.java:162) at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.<init>(RegionCoprocessorHost.java:126) at org.apache.hadoop.hbase.regionserver.HRegion.<init>(HRegion.java:417) ... 11 moreCaused by: java.lang.ClassNotFoundException: kafka.common.NoBrokersForPartitionException at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ... 21 more