Author: clamb
Date: Fri Aug 8 01:32:18 2014
New Revision: 1616657
URL: http://svn.apache.org/r1616657
Log:
MAPREDUCE-6007. Add support to distcp to preserve raw.* namespace extended
attributes. (clamb)
Modified:
hadoop/common/branches/fs-encryption/hadoop-mapreduce-project/CHANGES-fs-encryption.txt
hadoop/common/branches/fs-encryption/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/site/markdown/DistCp.md.vm
Modified:
hadoop/common/branches/fs-encryption/hadoop-mapreduce-project/CHANGES-fs-encryption.txt
URL:
http://svn.apache.org/viewvc/hadoop/common/branches/fs-encryption/hadoop-mapreduce-project/CHANGES-fs-encryption.txt?rev=1616657&r1=1616656&r2=1616657&view=diff
==============================================================================
---
hadoop/common/branches/fs-encryption/hadoop-mapreduce-project/CHANGES-fs-encryption.txt
(original)
+++
hadoop/common/branches/fs-encryption/hadoop-mapreduce-project/CHANGES-fs-encryption.txt
Fri Aug 8 01:32:18 2014
@@ -11,5 +11,8 @@ fs-encryption (Unreleased)
IMPROVEMENTS
+ MAPREDUCE-6007. Add support to distcp to preserve raw.* namespace
+ extended attributes. (clamb)
+
BUG FIXES
Modified:
hadoop/common/branches/fs-encryption/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/site/markdown/DistCp.md.vm
URL:
http://svn.apache.org/viewvc/hadoop/common/branches/fs-encryption/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/site/markdown/DistCp.md.vm?rev=1616657&r1=1616656&r2=1616657&view=diff
==============================================================================
---
hadoop/common/branches/fs-encryption/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/site/markdown/DistCp.md.vm
(original)
+++
hadoop/common/branches/fs-encryption/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/site/markdown/DistCp.md.vm
Fri Aug 8 01:32:18 2014
@@ -191,6 +191,26 @@ $H3 Update and Overwrite
If `-update` is used, `1` is overwritten as well.
+$H3 raw Namespace Extended Attribute Preservation
+
+ This section only applies to HDFS.
+
+ If the target and all of the source pathnames are in the /.reserved/raw
+ hierarchy, then 'raw' namespace extended attributes will be preserved.
+ 'raw' xattrs are used by the system for internal functions such as encryption
+ meta data. They are only visible to users when accessed through the
+ /.reserved/raw hierarchy.
+
+ raw xattrs are preserved based solely on whether /.reserved/raw prefixes are
+ supplied. The -p (preserve, see below) flag does not impact preservation of
+ raw xattrs.
+
+ To prevent raw xattrs from being preserved, simply do not use the
+ /.reserved/raw prefix on any of the source and target paths.
+
+ If the /.reserved/raw prefix is specified on only a subset of the source and
+ target paths, an error will be displayed and a non-0 exit code returned.
+
Command Line Options
--------------------
