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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2019/03/20 09:31:00 UTC

[jira] [Created] (HADOOP-16202) S3A openFile() operation to support explicit versionID, etag parameters

Steve Loughran created HADOOP-16202:
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             Summary: S3A openFile() operation to support explicit versionID, etag parameters
                 Key: HADOOP-16202
                 URL: https://issues.apache.org/jira/browse/HADOOP-16202
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3
    Affects Versions: 3.3.0
            Reporter: Steve Loughran


The {{openFile()}} builder API lets us add new options when reading a file

Proposed: allowing applications to explicitly demand on. If we explicitly add the values in the S3A filestatus & located filestatus (maybe even: checksum?), then you can list a directory and. knowing those values, explicitly ask for that version of file.

{code}
org.apache.fs.s3a.open.versionid + versionID
org.apache.fs.s3a.open.etag + etag
{code}
setting both will be an error.



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