diff --git a/CHANGES.txt b/CHANGES.txt
index a0d87d2f8c9..50de883e23e 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -937,6 +937,8 @@ Release 0.21.0 - Unreleased
 
   BUG FIXES
 
+    HADOOP-6773. Ivy folder contains redundant files (cos)
+
     HADOOP-5379. CBZip2InputStream to throw IOException on data crc error.
     (Rodrigo Schmidt via zshao)
 
diff --git a/ivy/hadoop-core.pom b/ivy/hadoop-core.pom
deleted file mode 100644
index ffdd18951e1..00000000000
--- a/ivy/hadoop-core.pom
+++ /dev/null
@@ -1,257 +0,0 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-
-  <!--
-   Licensed to the Apache Software Foundation (ASF) under one or more
-   contributor license agreements.  See the NOTICE file distributed with
-   this work for additional information regarding copyright ownership.
-   The ASF licenses this file to You under the Apache License, Version 2.0
-   (the "License"); you may not use this file except in compliance with
-   the License.  You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-  -->
-
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>org.apache.hadoop</groupId>
-  <artifactId>hadoop-core</artifactId>
-  <packaging>jar</packaging>
-  <version>${hadoop.version}</version>
-  <description>
-    Hadoop is the distributed computing framework of Apache; hadoop-core contains
-    the filesystem, job tracker and map/reduce modules
-  </description>
-  <licenses>
-    <license>
-      <name>Apache License, Version 2.0</name>
-      <url>http://apache.org/licenses/LICENSE-2.0</url>
-    </license>
-  </licenses>
-  <dependencies>
-
-
-    <!-- always include commons-logging and log4J -->
-    <dependency>
-      <groupId>commons-logging</groupId>
-      <artifactId>commons-logging</artifactId>
-      <version>${commons-logging.version}</version>
-      <exclusions>
-        <exclusion>
-          <groupId>avalon-framework</groupId>
-          <artifactId>avalon-framework</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>javax.servlet</groupId>
-          <artifactId>servlet-api</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>junit</groupId>
-          <artifactId>junit</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>logkit</groupId>
-          <artifactId>logkit</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>log4j</groupId>
-          <artifactId>log4j</artifactId>
-        </exclusion>
-      </exclusions>
-    </dependency>
-
-    <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
-      <version>${log4j.version}</version>
-      <scope>optional</scope>
-      <exclusions>
-        <exclusion>
-          <groupId>javax.mail</groupId>
-          <artifactId>mail</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>javax.jms</groupId>
-          <artifactId>jms</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>com.sun.jdmk</groupId>
-          <artifactId>jmxtools</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>com.sun.jmx</groupId>
-          <artifactId>jmxri</artifactId>
-        </exclusion>
-      </exclusions>
-    </dependency>
-
-    <!--SLF4J is a JAR-based dependency; this POM binds it to log4J-->
-    <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-api</artifactId>
-      <version>${slf4j-api.version}</version>
-      <scope>optional</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-log4j12</artifactId>
-      <version>${slf4j-log4j12.version}</version>
-      <scope>optional</scope>
-      <exclusions>
-        <exclusion>
-          <groupId>log4j</groupId>
-          <artifactId>log4j</artifactId>
-        </exclusion>
-      </exclusions>
-    </dependency>
-
-    <!--Httpclient and its components are optional-->
-
-    <dependency>
-      <groupId>commons-httpclient</groupId>
-      <artifactId>commons-httpclient</artifactId>
-      <version>3.1</version>
-      <scope>optional</scope>
-      <exclusions>
-        <exclusion>
-          <groupId>commons-logging</groupId>
-          <artifactId>commons-logging</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>junit</groupId>
-          <artifactId>junit</artifactId>
-        </exclusion>
-      </exclusions>
-    </dependency>
-    <dependency>
-      <groupId>commons-codec</groupId>
-      <artifactId>commons-codec</artifactId>
-      <version>1.3</version>
-      <scope>optional</scope>
-    </dependency>
-
-    <!--CLI is needed to scan the command line, but only the 1.0 branch is released -->
-    <dependency>
-      <groupId>commons-cli</groupId>
-      <artifactId>commons-cli</artifactId>
-      <version>2.0-20070823</version>
-      <scope>optional</scope>
-    </dependency>
-
-
-   <!-- this is used for the ftp:// filesystem-->
-    <dependency>
-      <groupId>commons-net</groupId>
-      <artifactId>commons-net</artifactId>
-      <version>1.4.1</version>
-      <scope>optional</scope>
-    </dependency>
-
-    <!-- Jetty is used to serve up the application. It is marked as optional because
-    clients do not need it. All server-side deployments will need
-     all of these files.-->
-    <dependency>
-      <groupId>javax.servlet</groupId>
-      <artifactId>servlet-api</artifactId>
-      <version>${servlet-api.version}</version>
-      <scope>optional</scope>
-    </dependency>
-    <dependency>
-      <groupId>jetty</groupId>
-      <artifactId>org.mortbay.jetty</artifactId>
-      <version>${jetty.version}</version>
-      <scope>optional</scope>
-    </dependency>
-
-
-    <!--JSP support -->
-
-    <dependency>
-      <groupId>org.mortbay.jetty</groupId>
-      <artifactId>jsp-2.1</artifactId>
-      <version>${jetty.version}</version>
-      <scope>optional</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.mortbay.jetty</groupId>
-      <artifactId>jsp-api-2.1</artifactId>
-      <version>${jetty.version}</version>
-      <scope>optional</scope>
-    </dependency>
-    <dependency>
-      <groupId>commons-el</groupId>
-      <artifactId>commons-el</artifactId>
-      <version>${commons-el.version}</version>
-      <scope>optional</scope>
-    </dependency>
-
-
-    <!--JSPC assistance-->
-
-    <dependency>
-      <groupId>org.eclipse.jdt</groupId>
-      <artifactId>core</artifactId>
-      <version>${core.version}</version>
-      <scope>optional</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.apache.ant</groupId>
-      <artifactId>ant</artifactId>
-      <version>${apacheant.version}</version>
-      <scope>optional</scope>
-    </dependency>
-
-    <!-- JetS3t is a client library for S3.
-    -It is only needed if you want to work with S3 filesystems
-    -It pulls in commons-logging 1.1.1 and does not exclude all the cruft that comes with it.
-    By excluding it we stay in control of versions and dependencies
-    -->
-
-    <dependency>
-      <groupId>net.java.dev.jets3t</groupId>
-      <artifactId>jets3t</artifactId>
-      <version>${jets3t.version}</version>
-      <scope>optional</scope>
-      <exclusions>
-        <exclusion>
-          <groupId>commons-logging</groupId>
-          <artifactId>commons-logging</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>junit</groupId>
-          <artifactId>junit</artifactId>
-        </exclusion>
-      </exclusions>
-    </dependency>
-
-    <!--Kosmos filesystem
-    http://kosmosfs.sourceforge.net/
-    This is not in the central repository
-    -->
-    <!--
-        <dependency>
-          <groupId>org.kosmix</groupId>
-          <artifactId>kfs</artifactId>
-          <version>0.1</version>
-          <scope>optional</scope>
-        </dependency>
-    -->
-
-    <!--
-     http://xmlenc.sourceforge.net/
-     "The xmlenc library is a fast stream-based XML output library for Java."
-    -->
-    <dependency>
-      <groupId>xmlenc</groupId>
-      <artifactId>xmlenc</artifactId>
-      <version>0.52</version>
-      <scope>optional</scope>
-    </dependency>
-  </dependencies>
-</project>