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From junping...@apache.org
Subject hadoop git commit: Update document to reflect right versions, new features and big improvements on 2.8 release.
Date Tue, 17 Jan 2017 21:12:26 GMT
Repository: hadoop
Updated Branches:
  refs/heads/branch-2.8.0 e94a2bcfa -> 544e30170

Update document to reflect right versions, new features and big improvements on 2.8 release.

(cherry picked from commit fbcc45c8d1f0c72fa72466515a7443075a28c71e)

Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/544e3017
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/544e3017
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/544e3017

Branch: refs/heads/branch-2.8.0
Commit: 544e30170c4b17dcfd33ac9857fb9ac39ff06068
Parents: e94a2bc
Author: Junping Du <junping_du@apache.org>
Authored: Tue Jan 17 13:08:58 2017 -0800
Committer: Junping Du <junping_du@apache.org>
Committed: Tue Jan 17 13:10:52 2017 -0800

 hadoop-project/src/site/markdown/index.md.vm | 71 +++++++++++++++--------
 1 file changed, 48 insertions(+), 23 deletions(-)

diff --git a/hadoop-project/src/site/markdown/index.md.vm b/hadoop-project/src/site/markdown/index.md.vm
index 1cbc181..229691e 100644
--- a/hadoop-project/src/site/markdown/index.md.vm
+++ b/hadoop-project/src/site/markdown/index.md.vm
@@ -16,47 +16,72 @@ Apache Hadoop ${project.version}
 Apache Hadoop ${project.version} is a minor release in the 2.x.y release
-line, building upon the previous stable release 2.4.1.
+line, building upon the previous stable release 2.7.3.
 Here is a short overview of the major features and improvements.
 *   Common
-    *   Authentication improvements when using an HTTP proxy server. This is
-        useful when accessing WebHDFS via a proxy server.
+    *   Support async call retry and failover which can be used in async DFS
+        implementation with retry effort.
-    *   A new Hadoop metrics sink that allows writing directly to Graphite.
+    *   Cross Frame Scripting (XFS) prevention for UIs can be provided through
+        a common servlet filter.
-    *   [Specification work](./hadoop-project-dist/hadoop-common/filesystem/index.html)
-        related to the Hadoop Compatible Filesystem (HCFS) effort.
+    *   S3A improvements: add ability to plug in any AWSCredentialsProvider,
+        support read s3a credentials from hadoop credential provider API in
+        addition to XML configuraiton files, support Amazon STS temporary
+        credentials
+    *   WASB improvements: adding append API support
+    *   Build enhancements: replace dev-support with wrappers to Yetus,
+        provide a docker based solution to setup a build environment,
+        remove CHANGES.txt and rework the change log and release notes.
+    *   Add posixGroups support for LDAP groups mapping service.
 *   HDFS
-    *   Support for POSIX-style filesystem extended attributes. See the
-        [user documentation](./hadoop-project-dist/hadoop-hdfs/ExtendedAttributes.html)
-        for more details.
+    *   WebHDFS enhancements: integrate CSRF prevention filter in WebHDFS,
+        support OAuth2 in WebHDFS, disallow/allow snapshots via WebHDFS
+    *   Allow long-running Balancer to login with keytab
+    *   Add ReverseXML processor which reconstructs an fsimage from an XML file.
+        This will make it easy to create fsimages for testing, and manually edit
+        fsimages when there is corruption
+    *   Support nested encryption zones
-    *   Using the OfflineImageViewer, clients can now browse an fsimage via
-        the WebHDFS API.
+    *   DataNode Lifeline Protocol: an alternative protocol for reporting DataNode
+        liveness. This can prevent the NameNode from incorrectly marking DataNodes
+        as stale or dead in highly overloaded clusters where heartbeat processing
+        is suffering delays.
-    *   The NFS gateway received a number of supportability improvements and
-        bug fixes. The Hadoop portmapper is no longer required to run the gateway,
-        and the gateway is now able to reject connections from unprivileged ports.
+    *   Logging HDFS operation's caller context into audit logs
-    *   The SecondaryNameNode, JournalNode, and DataNode web UIs have been
-        modernized with HTML5 and Javascript.
+    *   A new Datanode command for evicting writers which is useful when data node
+        decommissioning is blocked by slow writers.
 *   YARN
-    *   YARN's REST APIs now support write/modify operations. Users can submit and
-        kill applications through REST APIs.
+    *   NodeManager CPU resource monitoring in Windows.
+    *   NM shutdown more graceful: NM will unregister to RM immediately rather than
+        waiting for timeout to be LOST (if NM work preserving is not enabled).
+    *   Add ability to fail a specific AM attempt in scenario of AM attempt get stuck.
+    *   CallerContext support in YARN audit log.
+    *   ATS versioning support: a new configuration to indicate timeline service version.
-    *   The timeline store in YARN, used for storing generic and
-        application-specific information for applications, supports authentication
-        through Kerberos.
+    *   Allow node labels get specificed in submitting MR jobs
-    *   The Fair Scheduler supports dynamic hierarchical user queues, user queues
-        are created dynamically at runtime under any specified parent-queue.
+    *   Add a new tool to combine aggregated logs into HAR files
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