HBASE-14510 Fix coprocessor handling of duplicate classes (Yerui Sun)

hbase-client/src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java

@@ -1361,7 +1361,6 @@ public class HTableDescriptor implements WritableComparable<HTableDescriptor> {
    * {@link HConstants#CP_HTD_ATTR_VALUE_PATTERN}
    * @throws IOException
    */
-  // Pity about ugly method name. addCoprocessor(String) already taken above.
   public HTableDescriptor addCoprocessorWithSpec(final String specStr) throws IOException {
     String className = getCoprocessorClassNameFromSpecStr(specStr);
     if (className == null) {

hbase-shell/src/main/ruby/hbase/admin.rb

@@ -584,7 +584,7 @@ module Hbase
             if (k =~ /coprocessor/i)
               v = String.new(value)
               v.strip!
-              htd.addCoprocessor(v)
+              htd.addCoprocessorWithSpec(v)
               valid_coproc_keys << key
             end
           end