Completes a multipart upload by assembling previously uploaded parts.
You first initiate the multipart upload and then upload all parts using
the upload_part
operation. After successfully
uploading all relevant parts of an upload, you call this operation to
complete the upload. Upon receiving this request, Amazon S3 concatenates
all the parts in ascending order by part number to create a new object.
In the Complete Multipart Upload request, you must provide the parts
list. You must ensure that the parts list is complete. This operation
concatenates the parts that you provide in the list. For each part in
the list, you must provide the part number and the ETag
value,
returned after that part was uploaded.
Processing of a Complete Multipart Upload request could take several
minutes to complete. After Amazon S3 begins processing the request, it
sends an HTTP response header that specifies a 200 OK response. While
processing is in progress, Amazon S3 periodically sends white space
characters to keep the connection from timing out. Because a request
could fail after the initial 200 OK response has been sent, it is
important that you check the response body to determine whether the
request succeeded.
Note that if complete_multipart_upload
fails, applications should be prepared to retry the failed requests. For
more information, see Amazon S3 Error Best Practices.
For more information about multipart uploads, see Uploading Objects Using Multipart Upload.
For information about permissions required to use the multipart upload
API, see Multipart Upload API and Permissions.
complete_multipart_upload
has the
following special errors:
The following operations are related to
complete_multipart_upload
: