HADOOP-6975. Integer overflow in S3InputStream for blocks > 2GB. Contributed by Patrick Kling.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1029867 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -292,6 +292,9 @@ Trunk (unreleased changes)
     HADOOP-7011.  Fix KerberosName.main() to not throw an NPE.
     (Aaron T. Myers via tomwhite)
 
+    HADOOP-6975.  Integer overflow in S3InputStream for blocks > 2GB.
+    (Patrick Kling via tomwhite)
+
 Release 0.21.1 - Unreleased
 
   IMPROVEMENTS

src/java/org/apache/hadoop/fs/s3/S3InputStream.java

@@ -128,7 +128,7 @@ class S3InputStream extends FSInputStream {
       if (pos > blockEnd) {
         blockSeekTo(pos);
       }
-      int realLen = Math.min(len, (int) (blockEnd - pos + 1));
+      int realLen = (int) Math.min((long) len, (blockEnd - pos + 1L));
       int result = blockStream.read(buf, off, realLen);
       if (result >= 0) {
         pos += result;