I am trying out the distributed random forest implementation of H2O using sparkling-water. But I am facing the following error when I run the spark-submit command.
Exception in thread "H2O Launcher thread" java.lang.ExceptionInInitializerError
at water.init.NetworkInit.initializeNetworkSockets(NetworkInit.java:77)
at water.H2O.startLocalNode(H2O.java:1621)
at water.H2O.main(H2O.java:2081)
at water.H2OStarter.start(H2OStarter.java:22)
at water.H2OStarter.start(H2OStarter.java:47)
at org.apache.spark.h2o.backends.internal.InternalBackendUtils$$anonfun$6$$anon$1.run(InternalBackendUtils.scala:173)
Caused by: java.lang.IllegalStateException: HTTP Server cannot be loaded: No implementation of HttpServerFacade found on classpath. Please refer to https://0xdata.atlassian.net/browse/TN-13 for details.
at water.webserver.iface.HttpServerLoader.<clinit>(HttpServerLoader.java:16)
... 6 more
I have tried out the solution mentioned at the location https://0xdata.atlassian.net/browse/TN-13
but for some reason it still isn't able to find the ai.h2o:h2o-jetty-8
on the classpath.
I resolved the issue by adding the following maven coordinates to the packages option in spark-submit
--packages ai.h2o:h2o-jetty-8:3.24.0.3