svn commit: r1526567 - /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java

[cmccabe]

Author: cmccabe
Date: Thu Sep 26 15:24:30 2013
New Revision: 1526567

URL: http://svn.apache.org/r1526567
Log:
HADOOP-9998. Provide methods to clear only part of the DNSToSwitchMapping. 
(Junping Du via Colin Patrick McCabe)

Modified:
    
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java

Modified: 
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java
URL: 
http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java?rev=1526567&r1=1526566&r2=1526567&view=diff
==============================================================================
--- 
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java
 (original)
+++ 
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java
 Thu Sep 26 15:24:30 2013
@@ -887,7 +887,12 @@ public class DatanodeManager {
       // If the network location is invalid, clear the cached mappings
       // so that we have a chance to re-add this DataNode with the
       // correct network location later.
-      dnsToSwitchMapping.reloadCachedMappings();
+      List<String> invalidNodeNames = new ArrayList<String>(3);
+      // clear cache for nodes in IP or Hostname
+      invalidNodeNames.add(nodeReg.getIpAddr());
+      invalidNodeNames.add(nodeReg.getHostName());
+      invalidNodeNames.add(nodeReg.getPeerHostName());
+      dnsToSwitchMapping.reloadCachedMappings(invalidNodeNames);
       throw e;
     }
   }