svn commit: r1532917 - in /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs: CHANGES.txt src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java

[kihwal]

Author: kihwal
Date: Wed Oct 16 21:19:31 2013
New Revision: 1532917

URL: http://svn.apache.org/r1532917
Log:
HDFS-5346. Avoid unnecessary call to getNumLiveDataNodes() for each block 
during IBR processing. Contributed by Ravi Prakash.

Modified:
    
hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
    
hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java

Modified: 
hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
URL: 
http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt?rev=1532917&r1=1532916&r2=1532917&view=diff
==============================================================================
--- 
hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt 
(original)
+++ 
hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt 
Wed Oct 16 21:19:31 2013
@@ -19,6 +19,9 @@ Release 0.23.10 - UNRELEASED
     HDFS-4329. DFSShell issues with directories with spaces in name (Cristina
     L. Abad via jeagles)
 
+    HDFS-5346. Avoid unnecessary call to getNumLiveDataNodes() for each block
+    during IBR processing (Ravi Prakash via kihwal)
+
   OPTIMIZATIONS
 
   BUG FIXES

Modified: 
hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
URL: 
http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java?rev=1532917&r1=1532916&r2=1532917&view=diff
==============================================================================
--- 
hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
 (original)
+++ 
hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
 Wed Oct 16 21:19:31 2013
@@ -3094,7 +3094,7 @@ public class FSNamesystem implements Nam
      */
     private boolean needEnter() {
       return (threshold != 0 && blockSafe < blockThreshold) ||
-        (getNumLiveDataNodes() < datanodeThreshold) ||
+        (datanodeThreshold != 0 && getNumLiveDataNodes() < datanodeThreshold) 
||
         (!nameNodeHasResourcesAvailable());
     }