[SPARK-7522] [EXAMPLES] Removed angle brackets from dataFormat option

As is, to specify this option on command line, you have to escape the angle brackets.

Author: Bryan Cutler <[email protected]>

Closes apache#6049 from BryanCutler/dataFormat-option-7522 and squashes the following commits:

b34afb4 [Bryan Cutler] [SPARK-7522] Removed angle brackets from dataFormat option

Author: BryanCutler

examples/src/main/scala/org/apache/spark/examples/ml/DecisionTreeExample.scala

@@ -112,7 +112,7 @@ object DecisionTreeExample {
         .text(s"input path to test dataset.  If given, option fracTest is ignored." +
           s" default: ${defaultParams.testInput}")
         .action((x, c) => c.copy(testInput = x))
-      opt[String]("<dataFormat>")
+      opt[String]("dataFormat")
         .text("data format: libsvm (default), dense (deprecated in Spark v1.1)")
         .action((x, c) => c.copy(dataFormat = x))
       arg[String]("<input>")

examples/src/main/scala/org/apache/spark/examples/ml/GBTExample.scala

@@ -111,7 +111,7 @@ object GBTExample {
         .text(s"input path to test dataset.  If given, option fracTest is ignored." +
         s" default: ${defaultParams.testInput}")
         .action((x, c) => c.copy(testInput = x))
-      opt[String]("<dataFormat>")
+      opt[String]("dataFormat")
         .text("data format: libsvm (default), dense (deprecated in Spark v1.1)")
         .action((x, c) => c.copy(dataFormat = x))
       arg[String]("<input>")

examples/src/main/scala/org/apache/spark/examples/ml/RandomForestExample.scala

@@ -117,7 +117,7 @@ object RandomForestExample {
         .text(s"input path to test dataset.  If given, option fracTest is ignored." +
         s" default: ${defaultParams.testInput}")
         .action((x, c) => c.copy(testInput = x))
-      opt[String]("<dataFormat>")
+      opt[String]("dataFormat")
         .text("data format: libsvm (default), dense (deprecated in Spark v1.1)")
         .action((x, c) => c.copy(dataFormat = x))
       arg[String]("<input>")

examples/src/main/scala/org/apache/spark/examples/mllib/DecisionTreeRunner.scala

@@ -126,7 +126,7 @@ object DecisionTreeRunner {
         .text(s"input path to test dataset.  If given, option fracTest is ignored." +
           s" default: ${defaultParams.testInput}")
         .action((x, c) => c.copy(testInput = x))
-      opt[String]("<dataFormat>")
+      opt[String]("dataFormat")
         .text("data format: libsvm (default), dense (deprecated in Spark v1.1)")
         .action((x, c) => c.copy(dataFormat = x))
       arg[String]("<input>")

examples/src/main/scala/org/apache/spark/examples/mllib/GradientBoostedTreesRunner.scala

@@ -69,7 +69,7 @@ object GradientBoostedTreesRunner {
         .text(s"input path to test dataset.  If given, option fracTest is ignored." +
           s" default: ${defaultParams.testInput}")
         .action((x, c) => c.copy(testInput = x))
-      opt[String]("<dataFormat>")
+      opt[String]("dataFormat")
         .text("data format: libsvm (default), dense (deprecated in Spark v1.1)")
         .action((x, c) => c.copy(dataFormat = x))
       arg[String]("<input>")