HBASE-2828 HTable unnecessarily coupled with HMaster -- Added comment that we do not want dependency on Master

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1030745 13f79535-47bb-0310-9956-ffa450edef68

pom.xml

@@ -261,6 +261,7 @@
           <execution>
             <goals>
               <goal>generate-html</goal>
+              <goal>generate-pdf</goal>
             </goals>
             <phase>pre-site</phase>
           </execution>

src/main/java/org/apache/hadoop/hbase/client/HTable.java

@@ -197,13 +197,13 @@ public class HTable implements HTableInterface {
   }
 
   /**
-   * TODO Might want to change this to public, would be nice if the number
-   * of threads would automatically change when servers were added and removed
    * @return the number of region servers that are currently running
    * @throws IOException if a remote or network exception occurs
    */
-  int getCurrentNrHRS() throws IOException {
+  public int getCurrentNrHRS() throws IOException {
     try {
+      // We go to zk rather than to master to get count of regions to avoid
+      // HTable having a Master dependency.  See HBase-2828
       return ZKUtil.getNumberOfChildren(this.connection.getZooKeeperWatcher(),
           this.connection.getZooKeeperWatcher().rsZNode);
     } catch (KeeperException ke) {