Can not start spark on my cluster

Question

Information in log file spark-hadoop-org.apache.spark.deploy.master.Master-1-master.outis as bellow:

And in log file spark-hadoop-org.apache.spark.deploy.worker.Worker-1-master.out it says:

Help please. My spark version is:spark-1.6.0-bin-without-hadoop.tgz Scala version is:2.10.5 Hadoop version is:2.6.0

Answer 1

You need to add slf4j.api-1.6.1.jar under $SPARK_HOME/lib directory on each spark workers node as well as on spark master node. Once done please restart the master/worker process.