apache,jar,storm , Ubuntu Apache Storm jar Error: Could not find or load main class storm.starter


Ubuntu Apache Storm jar Error: Could not find or load main class storm.starter

Question:

Tag: apache,jar,storm

I was following the https://github.com/apache/storm/tree/master/examples/storm-starter . I'm using Ubuntu 14.04 LTS on my VMWare.

I can run mvn exec:java -D storm.topology=storm.starter.RollingTopWords in /home/user/storm/examples/storm-starter directory smoothly without problem. However I can't run it in Apache Storm.

I had storm-starter-topologies-0.9.3.jar in my /home/user/storm/examples/storm-starter directory. I also had storm-starter-0.9.3.jar & storm-starter-0.9.3-jar-with-dependencies.jar in my /home/user/storm/examples/storm-starter/target directory.

Below are the commands I tried before in /home/user/storm/bin directory:

./storm jar storm-starter-*.jar storm.starter.RollingTopWords

./storm jar storm-starter-0.9.3-jar-with-dependencies.jar storm.starter.RollingTopWords

./storm jar storm-starter-jar-with-dependencies.jar storm.starter.RollingTopWords

./storm jar storm-starter-topologies-0.9.3.jar storm.starter.RollingTopWords

with topology name:

./storm jar storm-starter-0.9.3-jar-with-dependencies.jar storm.starter.RollingTopWords slidingWindowCounts

./storm jar storm-starter-jar-with-dependencies.jar storm.starter.RollingTopWords slidingWindowCounts

./storm jar storm-starter-topologies-0.9.3.jar storm.starter.RollingTopWords slidingWindowCounts 

./storm jar storm-starter-0.9.3-jar storm.starter.RollingTopWords slidingWindowCounts 

All end up with the same error: Error: Could not find or load main class storm.starter.RollingTopWords .

All my class is in /home/user/storm/examples/storm-starter/target/classes/storm/starter directory The RollingTopWords.class is present in that directory.

How should I solve this problem? A detail solution will be helpful.


Answer:

Problem solved. The problem arise because the storm jar is run at incorrect directory. It should be run at /home/user/storm/examples/storm-starter/target directory since my storm-starter-0.9.3-jar-with-dependencies.jar is in that directory.


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