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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-14204) S3A multipart commit failing, "UnsupportedOperationException at java.util.Collections$UnmodifiableList.sort"
Date Mon, 20 Mar 2017 15:47:41 GMT
Steve Loughran created HADOOP-14204:
---------------------------------------

             Summary: S3A multipart commit failing, "UnsupportedOperationException at java.util.Collections$UnmodifiableList.sort"
                 Key: HADOOP-14204
                 URL: https://issues.apache.org/jira/browse/HADOOP-14204
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs/s3
    Affects Versions: 2.8.0
            Reporter: Steve Loughran
            Assignee: Steve Loughran
            Priority: Critical


Stack trace seen trying to commit a multipart upload, as the EMR code (which takes a {{List<String>
etags}} is trying to sort that list directly, which it can't do if the list doesn't want to
be sorted.

later versions of the SDK clone the list before sorting.

We need to make sure that the list passed in can be sorted.



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