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MAPREDUCE-5920. Add Xattr option in DistCp docs. Contributed by Yi Liu. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1601983 13f79535-47bb-0310-9956-ffa450edef68
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Chris Nauroth 2014-06-11 18:36:06 +00:00
parent c6e29a9f06
commit 473e83ab71
2 changed files with 3 additions and 1 deletions
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hadoop-mapreduce-project/CHANGES.txt
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@ -145,6 +145,8 @@ Trunk (Unreleased)
MAPREDUCE-5898. distcp to support preserving HDFS extended attributes(XAttrs) MAPREDUCE-5898. distcp to support preserving HDFS extended attributes(XAttrs)
(Yi Liu via umamahesh) (Yi Liu via umamahesh)
MAPREDUCE-5920. Add Xattr option in DistCp docs. (Yi Liu via cnauroth)
Release 2.5.0 - UNRELEASED Release 2.5.0 - UNRELEASED
INCOMPATIBLE CHANGES INCOMPATIBLE CHANGES

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hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/site/markdown/DistCp.md.vm
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@ -196,7 +196,7 @@ Command Line Options
Flag | Description | Notes Flag | Description | Notes
----------------- | ------------------------------------ | -------- ----------------- | ------------------------------------ | --------
`-p[rbugpca]` | Preserve r: replication number b: block size u: user g: group p: permission c: checksum-type a: ACL | Modification times are not preserved. Also, when `-update` is specified, status updates will **not** be synchronized unless the file sizes also differ (i.e. unless the file is re-created). If -pa is specified, DistCp preserves the permissions also because ACLs are a super-set of permissions. `-p[rbugpcax]` | Preserve r: replication number b: block size u: user g: group p: permission c: checksum-type a: ACL x: XAttr | Modification times are not preserved. Also, when `-update` is specified, status updates will **not** be synchronized unless the file sizes also differ (i.e. unless the file is re-created). If -pa is specified, DistCp preserves the permissions also because ACLs are a super-set of permissions.
`-i` | Ignore failures | As explained in the Appendix, this option will keep more accurate statistics about the copy than the default case. It also preserves logs from failed copies, which can be valuable for debugging. Finally, a failing map will not cause the job to fail before all splits are attempted. `-i` | Ignore failures | As explained in the Appendix, this option will keep more accurate statistics about the copy than the default case. It also preserves logs from failed copies, which can be valuable for debugging. Finally, a failing map will not cause the job to fail before all splits are attempted.
`-log <logdir>` | Write logs to \<logdir\> | DistCp keeps logs of each file it attempts to copy as map output. If a map fails, the log output will not be retained if it is re-executed. `-log <logdir>` | Write logs to \<logdir\> | DistCp keeps logs of each file it attempts to copy as map output. If a map fails, the log output will not be retained if it is re-executed.
`-m <num_maps>` | Maximum number of simultaneous copies | Specify the number of maps to copy data. Note that more maps may not necessarily improve throughput. `-m <num_maps>` | Maximum number of simultaneous copies | Specify the number of maps to copy data. Note that more maps may not necessarily improve throughput.