Author: szetszwo
Date: Tue Nov  1 00:42:14 2011
New Revision: 1195738

URL: http://svn.apache.org/viewvc?rev=1195738&view=rev
Log:
svn merge -c 1195737 from branch-0.20-security for HDFS-2065.

Modified:
    hadoop/common/branches/branch-0.20-security-205/   (props changed)
    hadoop/common/branches/branch-0.20-security-205/CHANGES.txt   (contents, props changed)
    hadoop/common/branches/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/DFSClient.java
    hadoop/common/branches/branch-0.20-security-205/src/test/org/apache/hadoop/hdfs/TestDistributedFileSystem.java

Propchange: hadoop/common/branches/branch-0.20-security-205/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Tue Nov  1 00:42:14 2011
@@ -1,6 +1,6 @@
 /hadoop/common/branches/branch-0.20:826138,826568,829987,831184,833001,880632,898713,909245,909723,960946,990003,1044225
 /hadoop/common/branches/branch-0.20-append:955380,955398,955448,956329
-/hadoop/common/branches/branch-0.20-security:1170042,1170087,1170997,1171137,1171380,1171613,1171891,1171905,1172184,1172188,1172190,1172192,1173470,1174471,1175114,1176179,1176720,1177907,1179036,1179171,1179519,1179857,1183086,1183101,1183176,1183556,1186509,1187141,1189029,1189361,1190079,1190089,1190100
+/hadoop/common/branches/branch-0.20-security:1170042,1170087,1170997,1171137,1171380,1171613,1171891,1171905,1172184,1172188,1172190,1172192,1173470,1174471,1175114,1176179,1176720,1177907,1179036,1179171,1179519,1179857,1183086,1183101,1183176,1183556,1186509,1187141,1189029,1189361,1190079,1190089,1190100,1195737
 /hadoop/common/branches/branch-0.20-security-203:1096071,1097011,1097249,1097269,1097281,1097966,1098816,1098819,1098823,1098827,1098832,1098839,1098854,1098863,1099088,1099191,1099324,1099330,1099333,1102071,1128115
 /hadoop/common/branches/branch-0.20-security-204:1128390,1147228,1148069,1149316,1154413
 /hadoop/core/branches/branch-0.19:713112

Modified: hadoop/common/branches/branch-0.20-security-205/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-security-205/CHANGES.txt?rev=1195738&r1=1195737&r2=1195738&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20-security-205/CHANGES.txt (original)
+++ hadoop/common/branches/branch-0.20-security-205/CHANGES.txt Tue Nov  1 00:42:14 2011
@@ -52,6 +52,9 @@ Release 0.20.205.1 - unreleased
     getFileStatus on non-existing files; fix bugs in getBlockLocations; and
     changed getFileChecksum json response root to "FileChecksum".  (szetszwo)
 
+    HDFS-2065. Add null checks in DFSClient.getFileChecksum(..).  (Uma
+    Maheswara Rao G via szetszwo)
+
 Release 0.20.205.0 - 2011.10.06
 
   NEW FEATURES

Propchange: hadoop/common/branches/branch-0.20-security-205/CHANGES.txt
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Tue Nov  1 00:42:14 2011
@@ -1,6 +1,6 @@
 /hadoop/common/branches/branch-0.20/CHANGES.txt:826138,826568,829987,831184,833001,880632,898713,909245,909723,960946,990003,1044225
 /hadoop/common/branches/branch-0.20-append/CHANGES.txt:955380,955398,955448,956329
-/hadoop/common/branches/branch-0.20-security/CHANGES.txt:1170042,1170087,1170997,1171137,1171181,1171380,1171613,1171891,1171905,1172184,1172188,1172190,1172192,1173470,1173843,1174326,1174471,1174476,1174482,1175114,1176179,1176182,1176270,1176276,1176675,1176720,1177031,1177036,1177098,1177101,1177907,1178074,1179036,1179171,1179471,1179519,1179713,1179722,1179857,1179919,1183086,1183101,1183176,1183556,1186509,1187141,1189029,1189361,1190079,1190089,1190100
+/hadoop/common/branches/branch-0.20-security/CHANGES.txt:1170042,1170087,1170997,1171137,1171181,1171380,1171613,1171891,1171905,1172184,1172188,1172190,1172192,1173470,1173843,1174326,1174471,1174476,1174482,1175114,1176179,1176182,1176270,1176276,1176675,1176720,1177031,1177036,1177098,1177101,1177907,1178074,1179036,1179171,1179471,1179519,1179713,1179722,1179857,1179919,1183086,1183101,1183176,1183556,1186509,1187141,1189029,1189361,1190079,1190089,1190100,1195737
 /hadoop/common/branches/branch-0.20-security-203/CHANGES.txt:1096071,1097011,1097249,1097269,1097281,1097966,1098816,1098819,1098823,1098827,1098832,1098839,1098854,1098863,1099088,1099191,1099324,1099330,1099333,1102071,1128115
 /hadoop/common/branches/branch-0.20-security-204/CHANGES.txt:1128390,1147228,1148069,1149316,1154413,1159730,1161741
 /hadoop/core/branches/branch-0.18/CHANGES.txt:727226

Modified: hadoop/common/branches/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/DFSClient.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/DFSClient.java?rev=1195738&r1=1195737&r2=1195738&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/DFSClient.java (original)
+++ hadoop/common/branches/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/DFSClient.java Tue Nov  1 00:42:14 2011
@@ -25,7 +25,6 @@ import org.apache.hadoop.fs.*;
 import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.ipc.*;
 import org.apache.hadoop.net.NetUtils;
-import org.apache.hadoop.net.NodeBase;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.*;
 import org.apache.hadoop.hdfs.DistributedFileSystem.DiskStatus;
@@ -780,8 +779,11 @@ public class DFSClient implements FSCons
       ClientProtocol namenode, SocketFactory socketFactory, int socketTimeout
       ) throws IOException {
     //get all block locations
-    List<LocatedBlock> locatedblocks
-        = callGetBlockLocations(namenode, src, 0, Long.MAX_VALUE).getLocatedBlocks();
+    LocatedBlocks blockLocations = callGetBlockLocations(namenode, src, 0, Long.MAX_VALUE);
+    if (null == blockLocations) {
+      throw new FileNotFoundException("File does not exist: " + src);
+    }
+    List<LocatedBlock> locatedblocks = blockLocations.getLocatedBlocks();
     final DataOutputBuffer md5out = new DataOutputBuffer();
     int bytesPerCRC = 0;
     long crcPerBlock = 0;
@@ -791,8 +793,11 @@ public class DFSClient implements FSCons
     //get block checksum for each block
     for(int i = 0; i < locatedblocks.size(); i++) {
       if (refetchBlocks) {  // refetch to get fresh tokens
-        locatedblocks = callGetBlockLocations(namenode, src, 0, Long.MAX_VALUE)
-            .getLocatedBlocks();
+        blockLocations = callGetBlockLocations(namenode, src, 0, Long.MAX_VALUE);
+        if (null == blockLocations) {
+          throw new FileNotFoundException("File does not exist: " + src);
+        }
+        locatedblocks = blockLocations.getLocatedBlocks();
         refetchBlocks = false;
       }
       LocatedBlock lb = locatedblocks.get(i);

Modified: hadoop/common/branches/branch-0.20-security-205/src/test/org/apache/hadoop/hdfs/TestDistributedFileSystem.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-security-205/src/test/org/apache/hadoop/hdfs/TestDistributedFileSystem.java?rev=1195738&r1=1195737&r2=1195738&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20-security-205/src/test/org/apache/hadoop/hdfs/TestDistributedFileSystem.java (original)
+++ hadoop/common/branches/branch-0.20-security-205/src/test/org/apache/hadoop/hdfs/TestDistributedFileSystem.java Tue Nov  1 00:42:14 2011
@@ -23,6 +23,7 @@ import static org.junit.Assert.assertFal
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.net.URI;
 import java.security.PrivilegedExceptionAction;
@@ -255,6 +256,25 @@ public class TestDistributedFileSystem {
     final UserGroupInformation ugi = UserGroupInformation.createUserForTesting(
         current.getShortUserName() + "x", new String[]{"user"});
 
+    try {
+      ((DistributedFileSystem) hdfs).getFileChecksum(new Path(
+          "/test/TestNonExistingFile"));
+      fail("Expecting FileNotFoundException");
+    } catch (FileNotFoundException e) {
+      assertTrue("Not throwing the intended exception message", e.getMessage()
+          .contains("File does not exist: /test/TestNonExistingFile"));
+    }
+
+    try {
+      Path path = new Path("/test/TestExistingDir/");
+      hdfs.mkdirs(path);
+      ((DistributedFileSystem) hdfs).getFileChecksum(path);
+      fail("Expecting FileNotFoundException");
+    } catch (FileNotFoundException e) {
+      assertTrue("Not throwing the intended exception message", e.getMessage()
+          .contains("File does not exist: /test/TestExistingDir"));
+    }
+
     //hftp
     final String hftpuri = "hftp://" + nnAddr;
     System.out.println("hftpuri=" + hftpuri);