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https://issues.apache.org/jira/browse/HADOOP-13974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16293366#comment-16293366
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Aaron Fabbri commented on HADOOP-13974:
---------------------------------------
Ok, I think this is ready. I did more testing and this really does look like
occasional consistency issues listing the multipart uploads. The two
eventually() wrappers I added have worked for %100 of my tests.
Interesting passage from the AWS Multipart Upload docs:
{quote}
Only use the returned listing for verification. You should not use the result
of this listing when sending a complete multipart upload request. Instead,
maintain your own list of the part numbers you specified when uploading parts
and the corresponding ETag values that Amazon S3 returns.
{quote}
Seems to imply MPU upload listing does suffer from eventual consistency. I'm
guessing their implementation of the MPU complete operation just uses GET
internally, or has some retries and/or cache invalidations to make it
"reliable".
> S3a CLI to support list/purge of pending multipart commits
> ----------------------------------------------------------
>
> Key: HADOOP-13974
> URL: https://issues.apache.org/jira/browse/HADOOP-13974
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.0.0-beta1
> Reporter: Steve Loughran
> Assignee: Aaron Fabbri
> Attachments: HADOOP-13974.001.patch, HADOOP-13974.002.patch,
> HADOOP-13974.003.patch, HADOOP-13974.004.patch, HADOOP-13974.005.patch,
> HADOOP-13974.006.patch
>
>
> The S3A CLI will need to be able to list and delete pending multipart
> commits.
> We can do the cleanup already via fs.s3a properties. The CLI will let scripts
> stat for outstanding data (have a different exit code) and permit batch jobs
> to explicitly trigger cleanups.
> This will become critical with the multipart committer, as there's a
> significantly higher likelihood of commits remaining outstanding.
> We may also want to be able to enumerate/cancel all pending commits in the FS
> tree
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