Backport of HDFS-3613 from trunk. svn merge -c 1359999 ../../trunk (harsh)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1360000 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -118,6 +118,9 @@ Release 2.0.1-alpha - UNRELEASED
     HDFS-3629. Fix the typo in the error message about inconsistent
     storage layout version. (Brandon Li via harsh)
 
+    HDFS-3613. GSet prints some INFO level values, which aren't
+    really very useful to all (Andrew Wang via harsh)
+
   OPTIMIZATIONS
 
     HDFS-2982. Startup performance suffers when there are many edit log

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlocksMap.java

@@ -81,10 +81,12 @@ class BlocksMap {
     final int exponent = e2 < 0? 0: e2 > 30? 30: e2;
     final int c = 1 << exponent;
 
-    LightWeightGSet.LOG.info("VM type       = " + vmBit + "-bit");
-    LightWeightGSet.LOG.info("2% max memory = " + twoPC/(1 << 20) + " MB");
-    LightWeightGSet.LOG.info("capacity      = 2^" + exponent
-        + " = " + c + " entries");
+    if (LightWeightGSet.LOG.isDebugEnabled()) {
+      LightWeightGSet.LOG.debug("VM type       = " + vmBit + "-bit");
+      LightWeightGSet.LOG.debug("2% max memory = " + twoPC/(1 << 20) + " MB");
+      LightWeightGSet.LOG.debug("capacity      = 2^" + exponent
+          + " = " + c + " entries");
+    }
     return c;
   }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/LightWeightGSet.java

@@ -79,7 +79,9 @@ public class LightWeightGSet<K, E extends K> implements GSet<K, E> {
    */
   public LightWeightGSet(final int recommended_length) {
     final int actual = actualArrayLength(recommended_length);
-    LOG.info("recommended=" + recommended_length + ", actual=" + actual);
+    if (LOG.isDebugEnabled()) {
+      LOG.debug("recommended=" + recommended_length + ", actual=" + actual);
+    }
 
     entries = new LinkedElement[actual];
     hash_mask = entries.length - 1;