svn commit: r1614812 - /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java

[ar...@apache.org]

Author: arp
Date: Thu Jul 31 06:02:46 2014
New Revision: 1614812

URL: http://svn.apache.org/r1614812
Log:
HDFS-6441. Add ability to exclude/include specific datanodes while balancing. (Contributed by Benoy Antony and Yu Li)

Modified:
    hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java

Modified: hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java
URL: http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java?rev=1614812&r1=1614811&r2=1614812&view=diff
==============================================================================
--- hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java (original)
+++ hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java Thu Jul 31 06:02:46 2014
@@ -27,6 +27,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Date;
+import java.util.HashSet;
 import java.util.Iterator;
 import java.util.LinkedHashSet;
 import java.util.List;
@@ -377,6 +378,19 @@ public class StringUtils {
     return str.trim().split("\\s*,\\s*");
   }
 
+  /**
+   * Trims all the strings in a Collection<String> and returns a Set<String>.
+   * @param strings
+   * @return
+   */
+  public static Set<String> getTrimmedStrings(Collection<String> strings) {
+    Set<String> trimmedStrings = new HashSet<String>();
+    for (String string: strings) {
+      trimmedStrings.add(string.trim());
+    }
+    return trimmedStrings;
+  }
+
   final public static String[] emptyStringArray = {};
   final public static char COMMA = ',';
   final public static String COMMA_STR = ",";