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Posted to common-issues@hadoop.apache.org by "Steve Loughran (Jira)" <ji...@apache.org> on 2021/11/29 16:23:00 UTC
[jira] [Resolved] (HADOOP-17979) Interface EtagSource to allow FileStatus subclasses to provide etags
[ https://issues.apache.org/jira/browse/HADOOP-17979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Loughran resolved HADOOP-17979.
-------------------------------------
Fix Version/s: 3.3.2
Resolution: Fixed
> Interface EtagSource to allow FileStatus subclasses to provide etags
> --------------------------------------------------------------------
>
> Key: HADOOP-17979
> URL: https://issues.apache.org/jira/browse/HADOOP-17979
> Project: Hadoop Common
> Issue Type: New Feature
> Components: fs, fs/azure, fs/s3
> Affects Versions: 3.3.1
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.3.2
>
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> Various objects stores provide etags in their FileStatus implementations
> Make these values accessible
> * new interface {{EtagFromFileStatus}} to be implemented when provided
> * filesystem.md to declare requirements of etags (constant between LIST and HEAD)...
> * path capabilities for (a) etag and (b) etags consistent across rename
> Add implementation for abfs, later s3a (and google gcs)
> This is initially to handle recovery from certain failures in job commit against abfs, but it would allow a cloud-ready version of distcp to track etags of uploaded files, so diff properly.
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