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spark:spark-introduction [2014/10/06 11:28]
straka 		spark:spark-introduction [2014/11/03 17:24]
straka
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 The IPYTHON=1 parameter instructs Spark to use ''ipython'' instead of ''python'' (the ''ipython'' is an enhanced interactive shell than Python). If you do not want ''ipython'' or you do not have it installed (it is installed everywhere on the cluster, but maybe not on your local workstations -- ask our IT if you want it), leave out the ''IPYTHON=1''. The IPYTHON=1 parameter instructs Spark to use ''ipython'' instead of ''python'' (the ''ipython'' is an enhanced interactive shell than Python). If you do not want ''ipython'' or you do not have it installed (it is installed everywhere on the cluster, but maybe not on your local workstations -- ask our IT if you want it), leave out the ''IPYTHON=1''.
  
-After a local Spark executor is started, the Python shell starts.+After a local Spark executor is started, the Python shell starts. Severel lines above 
 +the prompt line, the SparkUI address is listed in the following format:
   14/10/03 10:54:35 INFO SparkUI: Started SparkUI at http://tauri4.ufal.hide.ms.mff.cuni.cz:4040   14/10/03 10:54:35 INFO SparkUI: Started SparkUI at http://tauri4.ufal.hide.ms.mff.cuni.cz:4040
 +The SparkUI is an HTML interface which displays the state of the application -- if a distributed computation is taking place, how many workers are part of it, how many tasks are left to be processed, any error logs, also cached datasets and their properties (cached on disk / memory, their size) are displayed.
  
 ==== Running Spark Shell in Scala ==== ==== Running Spark Shell in Scala ====

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