Even, i am facing a similar kind of error. My Hadoop cluster cam up seemingly well. But while trying to start 'sqoop2-server' i am getting the JNI error. Any leads to resolving this will be appreciated - hadoop@master:/opt/hadoop/sqoop2/bin$ sqoop2-server start Setting conf dir: /opt/hadoop/sqoop2/conf Sqoop home directory: /opt/hadoop/sqoop2 Starting the Sqoop2 server... Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 64 at java.util.jar.JarFile.match(java.base@9-internal/JarFile.java:983) at java.util.jar.JarFile.checkForSpecialAttributes(java.base@9-internal/JarFile.java:1017) at java.util.jar.JarFile.isMultiRelease(java.base@9-internal/JarFile.java:399) at java.util.jar.JarFile.getEntry(java.base@9-internal/JarFile.java:524) at java.util.jar.JarFile.getJarEntry(java.base@9-internal/JarFile.java:480) at jdk.internal.util.jar.JarIndex.getJarIndex(java.base@9-internal/JarIndex.java:114) at jdk.internal.loader.URLClassPath$JarLoader$1.run(java.base@9-internal/URLClassPath.java:640) at jdk.internal.loader.URLClassPath$JarLoader$1.run(java.base@9-internal/URLClassPath.java:632) at java.security.AccessController.doPrivileged(java.base@9-internal/Native Method) at jdk.internal.loader.URLClassPath$JarLoader.ensureOpen(java.base@9-internal/URLClassPath.java:631) at jdk.internal.loader.URLClassPath$JarLoader.<init>(java.base@9-internal/URLClassPath.java:606) at jdk.internal.loader.URLClassPath$3.run(java.base@9-internal/URLClassPath.java:386) at jdk.internal.loader.URLClassPath$3.run(java.base@9-internal/URLClassPath.java:376) at java.security.AccessController.doPrivileged(java.base@9-internal/Native Method) at jdk.internal.loader.URLClassPath.getLoader(java.base@9-internal/URLClassPath.java:375) at jdk.internal.loader.URLClassPath.getLoader(java.base@9-internal/URLClassPath.java:352) at jdk.internal.loader.URLClassPath.getResource(java.base@9-internal/URLClassPath.java:218) at jdk.internal.loader.BuiltinClassLoader$3.run(java.base@9-internal/BuiltinClassLoader.java:463) at jdk.internal.loader.BuiltinClassLoader$3.run(java.base@9-internal/BuiltinClassLoader.java:460) at java.security.AccessController.doPrivileged(java.base@9-internal/Native Method) at jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(java.base@9-internal/BuiltinClassLoader.java:459) at jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(java.base@9-internal/BuiltinClassLoader.java:406) at jdk.internal.loader.BuiltinClassLoader.loadClass(java.base@9-internal/BuiltinClassLoader.java:364) at jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(java.base@9-internal/ClassLoaders.java:184) at java.lang.ClassLoader.loadClass(java.base@9-internal/ClassLoader.java:419) at sun.launcher.LauncherHelper.loadMainClass(java.base@9-internal/LauncherHelper.java:585) at sun.launcher.LauncherHelper.checkAndLoadMain(java.base@9-internal/LauncherHelper.java:497) Regards Pankaj , Even, i am facing a similar kind of error. My Hadoop cluster cam up seemingly well. But while trying to start 'sqoop2-server' i am getting the JNI error. Any leads to resolving this will be appreciated - hadoop@master:/opt/hadoop/sqoop2/bin$ sqoop2-server start Setting conf dir: /opt/hadoop/sqoop2/conf Sqoop home directory: /opt/hadoop/sqoop2 Starting the Sqoop2 server... Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 64 at java.util.jar.JarFile.match(java.base@9-internal/JarFile.java:983) at java.util.jar.JarFile.checkForSpecialAttributes(java.base@9-internal/JarFile.java:1017) at java.util.jar.JarFile.isMultiRelease(java.base@9-internal/JarFile.java:399) at java.util.jar.JarFile.getEntry(java.base@9-internal/JarFile.java:524) at java.util.jar.JarFile.getJarEntry(java.base@9-internal/JarFile.java:480) at jdk.internal.util.jar.JarIndex.getJarIndex(java.base@9-internal/JarIndex.java:114) at jdk.internal.loader.URLClassPath$JarLoader$1.run(java.base@9-internal/URLClassPath.java:640) at jdk.internal.loader.URLClassPath$JarLoader$1.run(java.base@9-internal/URLClassPath.java:632) at java.security.AccessController.doPrivileged(java.base@9-internal/Native Method) at jdk.internal.loader.URLClassPath$JarLoader.ensureOpen(java.base@9-internal/URLClassPath.java:631) at jdk.internal.loader.URLClassPath$JarLoader.<init>(java.base@9-internal/URLClassPath.java:606) at jdk.internal.loader.URLClassPath$3.run(java.base@9-internal/URLClassPath.java:386) at jdk.internal.loader.URLClassPath$3.run(java.base@9-internal/URLClassPath.java:376) at java.security.AccessController.doPrivileged(java.base@9-internal/Native Method) at jdk.internal.loader.URLClassPath.getLoader(java.base@9-internal/URLClassPath.java:375) at jdk.internal.loader.URLClassPath.getLoader(java.base@9-internal/URLClassPath.java:352) at jdk.internal.loader.URLClassPath.getResource(java.base@9-internal/URLClassPath.java:218) at jdk.internal.loader.BuiltinClassLoader$3.run(java.base@9-internal/BuiltinClassLoader.java:463) at jdk.internal.loader.BuiltinClassLoader$3.run(java.base@9-internal/BuiltinClassLoader.java:460) at java.security.AccessController.doPrivileged(java.base@9-internal/Native Method) at jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(java.base@9-internal/BuiltinClassLoader.java:459) at jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(java.base@9-internal/BuiltinClassLoader.java:406) at jdk.internal.loader.BuiltinClassLoader.loadClass(java.base@9-internal/BuiltinClassLoader.java:364) at jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(java.base@9-internal/ClassLoaders.java:184) at java.lang.ClassLoader.loadClass(java.base@9-internal/ClassLoader.java:419) at sun.launcher.LauncherHelper.loadMainClass(java.base@9-internal/LauncherHelper.java:585) at sun.launcher.LauncherHelper.checkAndLoadMain(java.base@9-internal/LauncherHelper.java:497) Regards Pankaj ... 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