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+---
+layout: global
+title: Accessing Openstack Swift storage from Spark
+---
+
+# Accessing Openstack Swift storage from Spark
+
+Spark's file interface allows it to process data in Openstack Swift using the same URI formats that are supported for Hadoop. You can specify a path in Swift as input through a URI of the form `swift://<container.service_provider>/path`. You will also need to set your Swift security credentials, through `SparkContext.hadoopConfiguration`. 
+
+#Configuring Hadoop to use Openstack Swift
+Openstack Swift driver was merged in Hadoop verion 2.3.0 ([Swift driver](https://issues.apache.org/jira/browse/HADOOP-8545))  Users that wish to use previous Hadoop versions will need to configure Swift driver manually. 
+<h2>Hadoop 2.3.0 and above.</h2>
+An Openstack Swift driver was merged into Haddop 2.3.0 . Current Hadoop driver requieres Swift to use Keystone authentication. There are additional efforts to support temp auth for Hadoop [Hadoop-10420](https://issues.apache.org/jira/browse/HADOOP-10420).
+To configure Hadoop to work with Swift one need to modify core-sites.xml of Hadoop and setup Swift FS.
+  
+    <configuration>
+      <property>
+	  <name>fs.swift.impl</name>
+	    <value>org.apache.hadoop.fs.swift.snative.SwiftNativeFileSystem</value>
+	  </property>
+    </configuration>
+
+
+<h2>Configuring Spark - stand alone cluster</h2>
+You need to configure the compute-classpath.sh and add Hadoop classpath for 
+
+  
+    CLASSPATH = <YOUR HADOOP PATH>/share/hadoop/common/lib/*
+    CLASSPATH = <YOUR HADOOP PATH>/share/hadoop/hdfs/*
+    CLASSPATH = <YOUR HADOOP PATH>/share/hadoop/tools/lib/*
+    CLASSPATH = <YOUR HADOOP PATH>/share/hadoop/hdfs/lib/*
+    CLASSPATH = <YOUR HADOOP PATH>/share/hadoop/mapreduce/*
+    CLASSPATH = <YOUR HADOOP PATH>/share/hadoop/mapreduce/lib/*
+    CLASSPATH = <YOUR HADOOP PATH>/share/hadoop/yarn/*
+    CLASSPATH = <YOUR HADOOP PATH>/share/hadoop/yarn/lib/*
+
+Additional parameters has to be provided to the Hadoop from Spark. Swift driver of Hadoop uses those parameters to perform authentication in Keystone needed to access Swift.
+List of mandatory parameters is : `fs.swift.service.<PROVIDER>.auth.url`, `fs.swift.service.<PROVIDER>.auth.endpoint.prefix`, `fs.swift.service.<PROVIDER>.tenant`, `fs.swift.service.<PROVIDER>.username`,
+`fs.swift.service.<PROVIDER>.password`, `fs.swift.service.<PROVIDER>.http.port`, `fs.swift.service.<PROVIDER>.http.port`, `fs.swift.service.<PROVIDER>.public`. 
+Create core-sites.xml and place it under /spark/conf directory. Configure core-sites.xml with general Keystone parameters, for example
+
+
+	  <property>
+	      <name>fs.swift.service.<PROVIDER>.auth.url</name>
+	      <value>http://127.0.0.1:5000/v2.0/tokens</value>
+	  </property>
+	  <property>
+	      <name>fs.swift.service.<PROVIDER>.auth.endpoint.prefix</name>
+	      <value>endpoints</value>
+	  </property>
+	      <name>fs.swift.service.<PROVIDER>.http.port</name>
+	      <value>8080</value>
+	  </property>
+	  <property>
+	      <name>fs.swift.service.<PROVIDER>.region</name>
+	      <value>RegionOne</value>
+	  </property>
+	  <property>
+	      <name>fs.swift.service.<PROVIDER>.public</name>
+	      <value>true</value>
+	  </property>
+
+We left with `fs.swift.service.<PROVIDER>.tenant`, `fs.swift.service.<PROVIDER>.username`, `fs.swift.service.<PROVIDER>.password`. The best way is to provide them to SparkContext in run time, which seems to be impossible yet.
+Another approach is to change Hadoop Swift FS driver to provide them via system environment variables. For now we provide them via core-sites.xml 
+
+	   <property>
+	      <name>fs.swift.service.<PROVIDER>.tenant</name>
+	      <value>test</value>
+	  </property>
+	  <property>
+	      <name>fs.swift.service.<PROVIDER>.username</name>
+	      <value>tester</value>
+	  </property>
+	  <property>
+	      <name>fs.swift.service.<PROVIDER>.password</name>
+	      <value>testing</value>
+	  </property>
+	  <property>
+<h3> Usage </h3>
+Assume you have a Swift container `logs` with an object `data.log`. You can use `swift://` scheme to access objects from Swift.
+
+    val sfdata = sc.textFile("swift://logs.<PROVIDER>/data.log")
+