I checked the META-INF/DEPENDENCIES file in the spark-assembly jar from official 1.0.0 binary release for CDH4, and found one "commons-codec" entry
From: 'The Apache Software Foundation' (http://jakarta.apache.org) - Codec (http://jakarta.apache.org/commons/codec/) commons-codec:commons-codec:jar:1.3 License: The Apache Software License, Version 2.0 (/LICENSE.txt) - Digester (http://jakarta.apache.org/commons/digester/) commons-digester:commons-digester:jar:1.8 License: The Apache Software License, Version 2.0 (/LICENSE.txt) - EL (http://jakarta.apache.org/commons/el/) commons-el:commons-el:jar:1.0 License: The Apache Software License, Version 2.0 (/LICENSE.txt) Should this be filed as a bug? -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/Need-help-Spark-Accumulo-Error-java-lang-NoSuchMethodError-org-apache-commons-codec-binary-Base64-eng-tp7667p8102.html Sent from the Apache Spark User List mailing list archive at Nabble.com.