Hello, we have a Cluster with CLOUDERA CDH 6.3.2 and I'm trying to run Janusgraph on the Cluster with YARN and HBASE, but without success.

(it's OK with SPARK Local)

Version SPARK 2.4.2

HBASE: 2.1.0-cdh6.3.2

Janusgraph (v 0.5.2 and v0.4.1)

I did a lot of searching, but I didn't find any recent references, and they all use older versions of SPARK and Janusgraph.

Some examples:

1) https://docs.janusgraph.org/advanced-topics/hadoop/  

2) http://tinkerpop.apache.org/docs/current/recipes/#olap-spark-yarn

3) http://yaaics.blogspot.com/2017/07/configuring-janusgraph-for-spark-yarn.html

According to these references, I followed the following steps:

1. Copy the following files to the Janusgraph "lib" directory:
1. spark-yarn-2.11-2.4.0.jar
2. scala-reflect-2.10.5.jar
3. hadoop-yarn-server-web-proxy-2.7.2.jar
4. guice-servlet-3.0.jar
2. Generate a "/tmp/spark-gremlin-0.5.2.zip" file containing all the .jar files from "janusgraph / lib /".
3. Create a configuration file called 'test.properties' from “conf/hadoop-graph/read-hbase-standalone-cluster.properties” by adding (or modifying) the properties below:
   
   

        janusgraphmr.ioformat.conf.storage.hostname=XXX.XXX.XXX.XXX 

spark.master= yarn

#spark.deploy-mode=client

spark.submit.deployMode=client

spark.executor.memory=1g

spark.yarn.dist.jars=/tmp/spark-gremlin-0-5-2.zip

spark.yarn.archive=/tmp/spark-gremlin-0-5-2.zip

spark.yarn.appMasterEnv.CLASSPATH=./__spark_libs__/*:[hadoop_conf_dir]

spark.executor.extraClassPath=./__spark_libs__/*:/[hadoop_conf_dir]

spark.driver.extraLibraryPath=/opt/cloudera/parcels/CDH/lib/hadoop/lib/native 

Then I ran the following commands:

graph = GraphFactory.open(conf/hadoop-graph/test.properties)
g = graph.traversal().withComputer(SparkGraphComputer)
g.V().count()

Can someone help me?

a) Are these problems related to version incompatibility?

b) Has anyone successfully used similar infrastructure?

c) Would anyone know how to determine a correct version of the necessary libraries?

d) Any suggestion?

Thank you all !!!

 Below is a copy of the Yarn Log from my last attempt.

ERROR org.apache.spark.scheduler.TaskSetManager  - Task 0 in stage 0.0 failed 4 times; aborting job
org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 0.0 failed 4 times, most recent failure: Lost task 0.3 in stage 0.0 (TID 3, [SERVER_NAME], executor 1): java.lang.NoSuchMethodError: net.jpountz.lz4.LZ4BlockInputStream.<init>(Ljava/io/InputStream;Z)V
at org.apache.spark.io.LZ4CompressionCodec.compressedInputStream(CompressionCodec.scala:122)
at org.apache.spark.broadcast.TorrentBroadcast$$anonfun$6.apply(TorrentBroadcast.scala:304)
at org.apache.spark.broadcast.TorrentBroadcast$$anonfun$6.apply(TorrentBroadcast.scala:304)
at scala.Option.map(Option.scala:146)
at org.apache.spark.broadcast.TorrentBroadcast$.unBlockifyObject(TorrentBroadcast.scala:304)
at org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1$$anonfun$apply$2.apply(TorrentBroadcast.scala:235)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1.apply(TorrentBroadcast.scala:211)
at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1326)
at org.apache.spark.broadcast.TorrentBroadcast.readBroadcastBlock(TorrentBroadcast.scala:207)
at org.apache.spark.broadcast.TorrentBroadcast._value$lzycompute(TorrentBroadcast.scala:66)
at org.apache.spark.broadcast.TorrentBroadcast._value(TorrentBroadcast.scala:66)
at org.apache.spark.broadcast.TorrentBroadcast.getValue(TorrentBroadcast.scala:96)
at org.apache.spark.broadcast.Broadcast.value(Broadcast.scala:70)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:89)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:55)
at org.apache.spark.scheduler.Task.run(Task.scala:121)
at org.apache.spark.executor.Executor$TaskRunner$$anonfun$10.apply(Executor.scala:402)
at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1360)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:408)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

Thank you!!