Steve Loughran created HADOOP-13786:
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Summary: add output committer which uses s3guard for consistent
O(1) commits to S3
Key: HADOOP-13786
URL: https://issues.apache.org/jira/browse/HADOOP-13786
Project: Hadoop Common
Issue Type: Sub-task
Components: fs/s3
Affects Versions: 3.0.0-alpha2
Reporter: Steve Loughran
Assignee: Steve Loughran
A goal of this code is "support O(1) commits to S3 repositories in the presence
of failures". Implement it, including whatever is needed to demonstrate the
correctness of the algorithm. (that is, assuming that s3guard provides a
consistent view of the presence/absence of blobs, show that we can commit
directly).
I consider ourselves free to expose the blobstore-ness of the s3 output streams
(ie. not visible until the close()), if we need to use that to allow us to
abort commit operations.
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