I launched the wordcount example and encountered a class not found error (I printed the classpath to make sure it includes a path to the missing file).
Didn't seem to help.
[root@keren bin]# ./textclient -host "172.20.10.3" -app text -infile-splits "NC1:</home/kereno/derby.log>" -outfile-splits "NC2:/tmp/output" -algo hash
CLASSPATH = :/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/etc:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/hyracks-dataflow-std-0.2.0.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/hyracks-api-0.2.0.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/json-20090211.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/httpclient-4.1-alpha2.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/httpcore-4.1-beta1.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/commons-logging-1.1.1.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/commons-codec-1.4.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/args4j-2.0.12.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/hyracks-ipc-0.2.0.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/commons-lang3-3.1.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/hyracks-dataflow-common-0.2.0.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/hyracks-data-std-0.2.0.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/texthelper-0.2.0.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-examples/text-example/textclient/target/textclient-0.2.0-binary-assembly/lib/textclient-0.2.0.jar:/home/kereno/hadoop23/hyracks-0.2.0/hyracks-api/target/classes/edu/uci/ics/hyracks/api/job
Exception in thread "main" edu.uci.ics.hyracks.api.exceptions.HyracksException: java.lang.ClassNotFoundException: edu/uci/ics/hyracks/api/job/JobSpecification
at edu.uci.ics.hyracks.control.cc.job.DeserializingJobSpecificationFactory.createJobSpecification(DeserializingJobSpecificationFactory.java:40)
at edu.uci.ics.hyracks.control.cc.application.CCApplicationContext.createJobSpecification(CCApplicationContext.java:75)
at edu.uci.ics.hyracks.control.cc.work.JobCreateWork.doRun(JobCreateWork.java:61)
at edu.uci.ics.hyracks.control.common.work.SynchronizableWork.run(SynchronizableWork.java:32)
at edu.uci.ics.hyracks.control.common.work.WorkQueue$WorkerThread.run(WorkQueue.java:115)
Caused by: java.lang.ClassNotFoundException: edu/uci/ics/hyracks/api/job/JobSpecification
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at edu.uci.ics.hyracks.api.util.JavaSerializationUtils$ClassLoaderObjectInputStream.resolveClass(JavaSerializationUtils.java:61)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1574)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1495)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1731)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
at edu.uci.ics.hyracks.api.util.JavaSerializationUtils.deserialize(JavaSerializationUtils.java:44)
at edu.uci.ics.hyracks.control.cc.job.DeserializingJobSpecificationFactory.createJobSpecification(DeserializingJobSpecificationFactory.java:36)
... 4 more
[root@keren bin]# ls /home/kereno/hadoop23/hyracks-0.2.0/hyracks-api/target/classes/edu/uci/ics/hyracks/api/job
IJobletEventListener.class IJobLifecycleListener.class IOperatorEnvironment.class JobFlag.class JobSpecification.class profiling
IJobletEventListenerFactory.class IJobSpecificationFactory.class JobActivityGraph.class JobId.class JobStatus.class
[root@keren bin]#