Hi Camelia, Flink 0.9.X supports Java 6. So this can't be the issue.
Out of curiosity, I gave it a spin on a Linux machine with OpenJDK 6. I was able to start the command-line interface, job manager and task managers. java version "1.6.0_36" OpenJDK Runtime Environment (IcedTea6 1.13.8) (6b36-1.13.8-0ubuntu1~14.04) OpenJDK 64-Bit Server VM (build 23.25-b01, mixed mode) I think the error must be caused by your NFS setup. Let's start with ./bin/flink. For instance, can you access "/users/camelia/thecluster/flink-0.9.1/lib/flink-dist-0.9.1.jar" from the machine where you run ./bin/flink? Best, Max On Wed, Nov 11, 2015 at 10:41 AM, Camelia Elena Ciolac <came...@chalmers.se> wrote: > Hello, > > As promised, I come back with debugging details. > So: > > ******* In start-cluster.sh , the following echo's > > echo "start-cluster ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" > echo $HOSTLIST > echo "start-cluster ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" > echo $FLINK_BIN_DIR > echo "start-cluster ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" > > # cluster mode, bring up job manager locally and a task manager on every > slave host > "$FLINK_BIN_DIR"/jobmanager.sh start cluster batch > > ==> gave: > > start-cluster ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /users/camelia/thecluster/flink-0.9.1/conf/slaves > start-cluster ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /users/camelia/thecluster/flink-0.9.1/bin > start-cluster ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > ******* In jobmanager.sh , the following echo's > > echo "Starting Job Manager" > echo "jobmanager ~~~~~~~~~~~~~~~~~~~~~" > pwd > echo "jobmanager ~~~~~~~~~~~~~~~~~~~~~" > echo ${FLINK_ENV_JAVA_OPTS} > echo "jobmanager ~~~~~~~~~~~~~~~~~~~~~" > echo $FLINK_JM_CLASSPATH > echo "jobmanager ~~~~~~~~~~~~~~~~~~~~~" > echo $INTERNAL_HADOOP_CLASSPATHS > echo "jobmanager ~~~~~~~~~~~~~~~~~~~~" > echo $FLINK_CONF_DIR > echo "~~~~~~~~~~~~~~~~~~~~" > $JAVA_RUN $JVM_ARGS ${FLINK_ENV_JAVA_OPTS} "${log_setting[@]}" > -classpath "`manglePathList > "$FLINK_JM_CLASSPATH:$INTERNAL_HADOOP_CLASSPATHS"`" > org.apache.flink.runtime.jobmanager.JobManager --configDir > "$FLINK_CONF_DIR" --executionMode $EXECUTIONMODE --streamingMode > "$STREAMINGMODE" > "$out" 2>&1 < /dev/null & > > > > ==> gave: > > jobmanager ~~~~~~~~~~~~~~~~~~~~~ > /users/camelia/thecluster > jobmanager ~~~~~~~~~~~~~~~~~~~~~ > > jobmanager ~~~~~~~~~~~~~~~~~~~~~ > > /users/camelia/thecluster/flink-0.9.1/lib/flink-dist-0.9.1.jar:/users/camelia/thecluster/flink-0.9.1/lib/flink-python-0.9.1.jar > jobmanager ~~~~~~~~~~~~~~~~~~~~~ > :: > jobmanager ~~~~~~~~~~~~~~~~~~~~ > /users/camelia/thecluster/flink-0.9.1/conf > ~~~~~~~~~~~~~~~~~~~~ > > Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/flink/runtime/jobmanager/JobManager > Caused by: java.lang.ClassNotFoundException: > org.apache.flink.runtime.jobmanager.JobManager > at java.net.URLClassLoader$1.run(URLClassLoader.java:217) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:205) > at java.lang.ClassLoader.loadClass(ClassLoader.java:323) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) > at java.lang.ClassLoader.loadClass(ClassLoader.java:268) > Could not find the main class: > org.apache.flink.runtime.jobmanager.JobManager. Program will exit. > > > > ******* In taskmanager.sh, the following echo's > > echo Starting task manager on host $HOSTNAME > echo "taskmanager ~~~~~~~~~~~~~~~~~~~~~" > pwd > echo "taskmanager ~~~~~~~~~~~~~~~~~~~~~" > echo ${FLINK_ENV_JAVA_OPTS} > echo "taskmanager ~~~~~~~~~~~~~~~~~~~~~" > echo $FLINK_JM_CLASSPATH > echo "taskmanager ~~~~~~~~~~~~~~~~~~~~~" > echo $INTERNAL_HADOOP_CLASSPATHS > echo "taskmanager ~~~~~~~~~~~~~~~~~~~~" > echo $FLINK_CONF_DIR > echo "~~~~~~~~~~~~~~~~~~~~" > $JAVA_RUN $JVM_ARGS ${FLINK_ENV_JAVA_OPTS} "${log_setting[@]}" > -classpath "`manglePathList > "$FLINK_TM_CLASSPATH:$INTERNAL_HADOOP_CLASSPATHS"`" > org.apache.flink.runtime.taskmanager.TaskManager --configDir > "$FLINK_CONF_DIR" --streamingMode "$STREAMINGMODE" > "$out" 2>&1 < > /dev/null & > > ==> gave: > > taskmanager ~~~~~~~~~~~~~~~~~~~~~ > /users/camelia/thecluster > taskmanager ~~~~~~~~~~~~~~~~~~~~~ > > taskmanager ~~~~~~~~~~~~~~~~~~~~~ > > taskmanager ~~~~~~~~~~~~~~~~~~~~~ > :: > taskmanager ~~~~~~~~~~~~~~~~~~~~ > /users/camelia/thecluster/flink-0.9.1/conf > ~~~~~~~~~~~~~~~~~~~~ > > Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/flink/runtime/taskmanager/TaskManager > Caused by: java.lang.ClassNotFoundException: > org.apache.flink.runtime.taskmanager.TaskManager > at java.net.URLClassLoader$1.run(URLClassLoader.java:217) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:205) > at java.lang.ClassLoader.loadClass(ClassLoader.java:323) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) > at java.lang.ClassLoader.loadClass(ClassLoader.java:268) > Could not find the main class: > org.apache.flink.runtime.taskmanager.TaskManager. Program will exit. > > > > ******* In flink , the following echo's > > echo "flink ~~~~~~~~~~~~~~~~~~~~~" > pwd > echo "flink ~~~~~~~~~~~~~~~~~~~~~" > echo $CC_CLASSPATH > echo "flink ~~~~~~~~~~~~~~~~~~~~~" > echo $INTERNAL_HADOOP_CLASSPATHS > echo "~~~~~~~~~~~~~~~~~~~~" > $JAVA_RUN $JVM_ARGS "${log_setting[@]}" -classpath "`manglePathList > "$CC_CLASSPATH:$INTERNAL_HADOOP_CLASSPATHS"`" > org.apache.flink.client.CliFrontend "$@" > > > ==> gave: > > flink ~~~~~~~~~~~~~~~~~~~~~ > /users/camelia/thecluster > flink ~~~~~~~~~~~~~~~~~~~~~ > > /users/camelia/thecluster/flink-0.9.1/lib/flink-dist-0.9.1.jar:/users/camelia/thecluster/flink-0.9.1/lib/flink-python-0.9.1.jar > flink ~~~~~~~~~~~~~~~~~~~~~ > :: > ~~~~~~~~~~~~~~~~~~~~ > Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/flink/client/CliFrontend > Caused by: java.lang.ClassNotFoundException: > org.apache.flink.client.CliFrontend > at java.net.URLClassLoader$1.run(URLClassLoader.java:217) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:205) > at java.lang.ClassLoader.loadClass(ClassLoader.java:323) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) > at java.lang.ClassLoader.loadClass(ClassLoader.java:268) > Could not find the main class: org.apache.flink.client.CliFrontend. > Program will exit. > > > I hope that now you have a better image of the issue and I hope you can > provide some guidance to solve it. > I mention that I use the simplest scenario possible, just 2 nodes (1 > master and 1 slave) without Hadoop for this test. > Also, I have a hostname command inside the script that shows me that I'm > on the master node when running these scripts. > > Thank you very much! > Camelia > > > ------------------------------ > *From:* Camelia Elena Ciolac > *Sent:* Wednesday, November 11, 2015 9:01 AM > *To:* user@flink.apache.org > *Subject:* RE: Cluster installation gives java.lang.NoClassDefFoundError > for everything > > Good morning, > > Thank you Stephan! > > I keep on testing and in the meantime I'm wondering if the Java version on > the cluster may be part of the issue: > java version "1.6.0_36" > OpenJDK Runtime Environment (IcedTea6 1.13.8) (rhel-1.13.8.1.el6_7-x86_64) > OpenJDK 64-Bit Server VM (build 23.25-b01, mixed mode) > ? > > The cluster has shared network file system, so no problem in this aspect. > I keep on trying and I've put some echo's for debugging in the Flink start > scripts. > > Best regards, > Camelia > > > > ------------------------------ > *From:* Camelia Elena Ciolac > *Sent:* Monday, November 09, 2015 2:32 PM > *To:* user@flink.apache.org > *Subject:* Cluster installation gives java.lang.NoClassDefFoundError for > everything > > Hello, > > I am configuring Flink to run on a cluster with NFS. > I have the Flink 0.9.1 distribution in some path in NFS and I added that > path in ~/.bashrc as FLINK_HOME, and also included the $FLINK_HOME/lib > folder to $PATH. > I have the slaves file and the yaml file configured correctly with the > nodes involved. > > Still, when I run the following command I get the following errors: > > $FLINK_HOME/bin/start-cluster.sh > > (tried also > cd $FLINK_HOME > ./bin/start-cluster.sh) > > --> in /log/flink-theuser-jobmanager-thenode.out > Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/flink/runtime/jobmanager/JobManager > Caused by: java.lang.ClassNotFoundException: > org.apache.flink.runtime.jobmanager.JobManager > at java.net.URLClassLoader$1.run(URLClassLoader.java:217) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:205) > at java.lang.ClassLoader.loadClass(ClassLoader.java:323) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) > at java.lang.ClassLoader.loadClass(ClassLoader.java:268) > Could not find the main class: > org.apache.flink.runtime.jobmanager.JobManager. Program will exit. > > -->in /log/flink-theuser-taskmanager-theslavenode.out > Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/flink/runtime/taskmanager/TaskManager > Caused by: java.lang.ClassNotFoundException: > org.apache.flink.runtime.taskmanager.TaskManager > at java.net.URLClassLoader$1.run(URLClassLoader.java:217) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:205) > at java.lang.ClassLoader.loadClass(ClassLoader.java:323) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) > at java.lang.ClassLoader.loadClass(ClassLoader.java:268) > Could not find the main class: > org.apache.flink.runtime.taskmanager.TaskManager. Program will exit. > > > And lastly, in my script I have the run of a job which gives: > > Exception in thread "main" java.lang.NoClassDefFoundError: > org/apache/flink/client/CliFrontend > Caused by: java.lang.ClassNotFoundException: > org.apache.flink.client.CliFrontend > at java.net.URLClassLoader$1.run(URLClassLoader.java:217) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:205) > at java.lang.ClassLoader.loadClass(ClassLoader.java:323) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) > at java.lang.ClassLoader.loadClass(ClassLoader.java:268) > Could not find the main class: org.apache.flink.client.CliFrontend. > Program will exit. > > What could be the cause and which is the solution? > > Looking forward to your answer as soon as possible. > Many thanks, > Camelia > >