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java.lang.NoClassDefFoundError: io/druid/indexing/common/task/ AbstractTask at java.lang.ClassLoader.defineClass1(Native Method)[na:1.8.0_45] at java.lang.ClassLoader.defineClass(ClassLoader.java:760)[na:1.8.0_45] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)[na:1.8.0_45] at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)[na:1.8.0_45] at java.net.URLClassLoader.access$100(URLClassLoader.java:73)[na:1.8.0_45] at java.net.URLClassLoader$1.run(URLClassLoader.java:368)[na:1.8.0_45] at java.net.URLClassLoader$1.run(URLClassLoader.java:362)[na:1.8.0_45] at java.security.AccessController.doPrivileged(Native Method)[na:1.8.0_45] at java.net.URLClassLoader.findClass(URLClassLoader.java:361)[na:1.8.0_45] at java.lang.ClassLoader.loadClass(ClassLoader.java:424)[na:1.8.0_45] at java.lang.ClassLoader.loadClass(ClassLoader.java:357)[na:1.8.0_45]