title: History server is not receiving any event
body: <p>I am working on streaming application. I tried to configure history server to persist the events of application in Hadoop file system (HDFS). However, it is not logging any events. </p>
  
  <p>I am running Apache Spark 1.4.1 (pyspark) under Ubuntu 14.04 with three nodes.</p>
  
  <p><strong>Here is my configuration:</strong></p>
  
  <p>File - <code>/usr/local/spark/conf/spark-defaults.conf</code></p>
  
  <pre><code>#In all three nodes
  spark.eventLog.enabled true 
  spark.eventLog.dir hdfs://master-host:port/usr/local/hadoop/spark_log 
  
  #in master node 
  export SPARK_HISTORY_OPTS="-Dspark.history.fs.logDirectory=hdfs://host:port/usr/local/hadoop/spark_log" 
  </code></pre>
  
  <p>Can someone give list of steps to configure history server?</p>