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Revert "HADOOP-14557. Document HADOOP-8143 (Change distcp to have -pb on by default)."

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This reverts commit 44350fdf49.

It is related to the rollback of HADOOP-8143.

Change-Id: If48e3dd670c920ada702dc36461ff398fe9d35cc
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Steve Loughran 2020-05-14 16:13:41 +01:00
parent 4486220bb2
commit d08b9e94e3
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hadoop-tools/hadoop-distcp/src/site/markdown/DistCp.md.vm
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@ -337,7 +337,7 @@ Command Line Options
| Flag | Description | Notes |
| ----------------- | ------------------------------------ | -------- |
| `-p[rbugpcaxte]` | Preserve r: replication number b: block size u: user g: group p: permission c: checksum-type a: ACL x: XAttr t: timestamp e: erasure coding policy | 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. The option -pr is only valid if both source and target directory are not erasure coded. **Note:** If -p option's are not specified, then by default block size is preserved. |
| `-p[rbugpcaxte]` | Preserve r: replication number b: block size u: user g: group p: permission c: checksum-type a: ACL x: XAttr t: timestamp e: erasure coding policy | 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. The option -pr is only valid if both source and target directory are not erasure coded. |
| `-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. |
| `-v` | Log additional info (path, size) in the SKIP/COPY log | This option can only be used with -log option. |