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https://issues.apache.org/jira/browse/JCLOUDS-1268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15980171#comment-15980171
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Michelle Zhang commented on JCLOUDS-1268:
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Hi Andrew, for this issue do you mean we need to calc the sha1 hashsum when
user doesn't provide it?
https://github.com/jclouds/jclouds-labs/blob/master/b2/src/main/java/org/jclouds/b2/binders/UploadFileBinder.java#L38
Then I modify the payload and add the hash sum to the end?
> Calculate and include SHA-1 hash at the end of a B2 upload
> -----------------------------------------------------------
>
> Key: JCLOUDS-1268
> URL: https://issues.apache.org/jira/browse/JCLOUDS-1268
> Project: jclouds
> Issue Type: Improvement
> Components: jclouds-blobstore
> Affects Versions: 2.0.1
> Reporter: Andrew Gaul
> Priority: Minor
> Labels: b2
>
> B2 removed the need to calculate the SHA-1 hash before uploading a file,
> allowing streaming. Currently jclouds uploads files without a hash, although
> B2 also supports calculating the hash while uploading then including the
> SHA-1 at the end via {{X-Bz-Content-Sha1: hex_digits_at_end}}:
> https://www.backblaze.com/b2/docs/uploading.html
> Supporting this requires some changes to jclouds to allow modifying the
> Payload to emit the hash at the end of the transfer.
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