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From "Mathieu Chataigner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5014) Extending DistCp through a custom CopyListing is not possible
Date Wed, 14 Jan 2015 12:51:35 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14276876#comment-14276876
] 

Mathieu Chataigner commented on MAPREDUCE-5014:
-----------------------------------------------

the patch is simple:

diff --git hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/CopyListing.java
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/CopyListing.java
index ab5b802..f7b4c1a 100644
--- hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/CopyListing.java
+++ hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/CopyListing.java
@@ -249,13 +249,13 @@ public static CopyListing getCopyListing(Configuration configuration,
     }
   }
 
-  static class DuplicateFileException extends RuntimeException {
+  public static class DuplicateFileException extends RuntimeException {
     public DuplicateFileException(String message) {
       super(message);
     }
   }
 
-  static class InvalidInputException extends RuntimeException {
+  public static class InvalidInputException extends RuntimeException {
     public InvalidInputException(String message) {
       super(message);
     }


> Extending DistCp through a custom CopyListing is not possible
> -------------------------------------------------------------
>
>                 Key: MAPREDUCE-5014
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5014
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: distcp
>    Affects Versions: 0.23.0, 0.23.1, 0.23.3, trunk, 0.23.4, 0.23.5
>            Reporter: Srikanth Sundarrajan
>            Assignee: Srikanth Sundarrajan
>             Fix For: 2.5.0
>
>         Attachments: MAPREDUCE-5014.patch, MAPREDUCE-5014.patch, m5014_20130322.patch,
m5014_20130322_b-1.patch, m5014_20130322b.patch, m5014_20130322b_b-1.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> * While it is possible to implement a custom CopyListing in DistCp, DistCp driver class
doesn't allow for using this custom CopyListing.
> * Allow SimpleCopyListing to provide an option to exclude files (For instance it is useful
to exclude FileOutputCommiter.SUCCEEDED_FILE_NAME during copy as premature copy can indicate
that the entire data is available at the destination)



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