Hi all, I had built up a HDF 3.3.1.0 with ambari, but I got NoClassDefFoundError when I'm building a data processing kafka to druid by Streaming Analytics Manager, how to fix it? My environment: Storm:1.2.1 SAM: 0.6.0 Kafka: 1.0.0.3.1 Druid: 0.12.1 Below is the logs in storm worker. java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonProcessingException at org.apache.storm.kafka.spout.KafkaSpout.open(KafkaSpout.java:142) ~[dep-org.apache.storm-storm-kafka-client-jar-1.2.1.3.3.1.0-10.jar.1555487788000:1.2.1.3.3.1.0-10] at org.apache.storm.daemon.executor$fn__10149$fn__10164.invoke(executor.clj:615) ~[storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78] at org.apache.storm.util$async_loop$fn__1221.invoke(util.clj:482) [storm-core-1.2.1.3.1.0.0-78.jar:1.2.1.3.1.0.0-78] at clojure.lang.AFn.run(AFn.java:22) [clojure-1.7.0.jar:?] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_112] Caused by: java.lang.ClassNotFoundException: com.fasterxml.jackson.core.JsonProcessingException at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:1.8.0_112] at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_112] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[?:1.8.0_112] at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_112] ... 5 more Thank you very much for your help. Best regards, DADA ... View more