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https://issues.apache.org/jira/browse/HADOOP-17979?focusedWorklogId=678656&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-678656
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ASF GitHub Bot logged work on HADOOP-17979:
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Author: ASF GitHub Bot
Created on: 08/Nov/21 18:42
Start Date: 08/Nov/21 18:42
Worklog Time Spent: 10m
Work Description: steveloughran commented on pull request #3633:
URL: https://github.com/apache/hadoop/pull/3633#issuecomment-963462053
+ @mukund-thakur @mehakmeet @snvijaya
new tests happy; regression tests in progress.
note this also moves abfs listFiles and listLocatedStatus API calls into
being incremental. this is a good thing anyway
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Issue Time Tracking
-------------------
Worklog Id: (was: 678656)
Time Spent: 20m (was: 10m)
> 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
> Time Spent: 20m
> 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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