Problem Description: Ingestion jobs fail while launching a yarn application. Application log fails with the following error message

2020-08-05 22:22:18,982 WARN [main] org.mortbay.log: failed guice: java.lang.IncompatibleClassChangeError: Implementing class

2020-08-05 22:22:18,982 WARN [main] org.mortbay.log: failed
org.mortbay.jetty.webapp.WebAppContext@718dbd79{/,jar:file:/hadoop/yarn/local/filecache/23/mapreduce.tar.gz/hadoop/share/hadoop/yarn/hadoop-yarn-common-!/webapps/mapreduce}: java.lang.IncompatibleClassChangeError: Implementing class

2020-08-05 22:22:18,983 WARN [main] org.mortbay.log: failed ContextHandlerCollection@706fe5c6: java.lang.IncompatibleClassChangeError: Implementing class

2020-08-05 22:22:18,984 ERROR [main] org.mortbay.log: Error starting handlersjava.lang.IncompatibleClassChangeError: Implementing class        
at java.lang.ClassLoader.defineClass1(Native Method)        
at java.lang.ClassLoader.defineClass(

Root cause: The error is due to the conflicting jetty jars that are getting loaded. The error is occurring while implementing the class org.mortbay.jetty.webapp.WebAppContext


Among the jars that are getting loaded following jars have the above class

1. jetty-all-9.4.18.v20190429-uber.jar
2. jetty-all-7.6.0.v20120127.jar
3. jetty-all-server-7.6.0.v20120127.jar

The last two are the native jars that come with hdp while the first one is shipped along with Infoworks DF and it is present in $IW_HOME/bin/shared 


1. Move the $IW_HOME/bin/shared/jetty-all-9.4.18.v20190429-uber.jar to a temporary location out $IW_HOME
2. cat /opt/infoworks/conf/ | grep iw_hdfs_temp_home (This will return you the temp location on hdfs)

3. hadoop fs -rm -r <location from previous step>/temp/iwjobs/libjars/
4. Trigger the ingestion jobs

Applicable Infoworks DataFoundry Versions: