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https://issues.apache.org/jira/browse/LIBCLOUD-490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13863010#comment-13863010
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Tomaz Muraus commented on LIBCLOUD-490:
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[~coderanger] I've pushed an initial fix for this issue. With my fix, multipart
uploads now also work correctly for empty (0 bytes sized) objects.
This fix / approach is not ideal because it still uses multipart upload which
induces an overhead of 2 HTTP requests.
I will work with [~mahendra.m] on improving the code and making sure it uses a
regular upload for objects smaller than <= MIN_CHUNK_SIZE.
> Zero-byte uploads to S3 fail
> ----------------------------
>
> Key: LIBCLOUD-490
> URL: https://issues.apache.org/jira/browse/LIBCLOUD-490
> Project: Libcloud
> Issue Type: Bug
> Components: Storage
> Affects Versions: 0.13.3
> Reporter: Noah Kantrowitz
>
> Calling storage.upload_object_via_stream(iter(('',)), path) fails with:
> {{libcloud.common.types.LibcloudError: <LibcloudError in
> <libcloud.storage.drivers.s3.S3StorageDriver object at 0x10b786610> 'Error in
> multipart commit'>}}
> A workaround is temporarily monkeypatch
> {{S3StorageDriver.supports_s3_multipart_upload = False}}. It would be nice if
> I could just call put_object directly in some useful way, for data that is
> small enough to fit in RAM (which in the case of an empty file is a bit of a
> tautology).
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