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https://issues.apache.org/jira/browse/HADOOP-15576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16563967#comment-16563967
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Ewan Higgs commented on HADOOP-15576:
-------------------------------------
004
- Add test for empty uploadID
- Make the part size configurable by FS implementation as S3A requires 5MB part
sizes (except the last part).
- Use md5sum to compare the file contents so we don't need to compare multiple
5MB blocks together if they were a string.
- Fix META-INF/service for S3AMultipartUploader$Factory.
{quote}
yes. If it's java serialization then it needs to be looked at to make sure it
defends against malicios stuff.
{quote}
Would you prefer protobuf for this? It would be an extra generation step + new
dependency.
> S3A Multipart Uploader to work with S3Guard and encryption
> -----------------------------------------------------------
>
> Key: HADOOP-15576
> URL: https://issues.apache.org/jira/browse/HADOOP-15576
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.2
> Reporter: Steve Loughran
> Assignee: Ewan Higgs
> Priority: Blocker
> Attachments: HADOOP-15576.001.patch, HADOOP-15576.002.patch,
> HADOOP-15576.003.patch, HADOOP-15576.004.patch
>
>
> The new Multipart Uploader API of HDFS-13186 needs to work with S3Guard, with
> the tests to demonstrate this
> # move from low-level calls of S3A client to calls of WriteOperationHelper;
> adding any new methods are needed there.
> # Tests. the tests of HDFS-13713.
> # test execution, with -DS3Guard, -DAuth
> There isn't an S3A version of {{AbstractSystemMultipartUploaderTest}}, and
> even if there was, it might not show that S3Guard was bypassed, because
> there's no checks that listFiles/listStatus shows the newly committed files.
> Similarly, because MPU requests are initiated in S3AMultipartUploader,
> encryption settings are't picked up. Files being uploaded this way *are not
> being encrypted*
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