CODEWITHSUNDEEP
androidamazon-web-servicesamazon-s3awss3transferutility
sandesh
sandesh

Reputation: 390

TransferUtility S3 resume does not work

I am using TransferUitlty class to upload files to S3. Everything is going fine except that after I pause a upload and resume it. the file is uploading from beginning and not from where I paused.

Is this resume method designed for restarting the upload or resuming from where it paused?

Can I use resume method to resume upload even after killing app?

CODE:

    private void uploadResume(int id,ProgressBar progress,File f,TextView filelength,ImageView updownststatus){
    if(sTransferUtility!=null){

        sTransferUtility.resume(id);
        observer= sTransferUtility.getTransferById(id);
        
        observer.setTransferListener(new UploadListener(progress, observer,f,filelength,updownststatus));
    }
}

Upvotes: 1

Views: 1163

Answers (2)

Soumen
Soumen

Reputation: 71

Sorry if I am trying to deviate from the topic, So my answer is basically towards file download.

So I was trying to download a resource from Amazon S3. I used transfer observer to know the state of transfer. I was able to pause the download and monitor it's state. However, I was unable to resume the download even after trying using transferUtility.resume(transferId). But then I tried transferObserver.refresh() and I was able to resume the download for my file.

Upvotes: 0

Yangfan
Yangfan

Reputation: 1876

This is by design of Amazon S3. You can pause and resume an upload on if it's a multipart upload. See S3 Multipart Upload Overview. Say you upload a 100Mb file with TransferUtility. The file will be broken into 20 parts, 5mb each, uploaded in parallel. You pause the upload when 3 parts are done and 3 are in process. And you resume it later. TransferUtility will continue the upload from 5mb * 3 = 15mb and it has 17 parts to transfer. That's because each part has be uploaded fully or else it will be discarded.

Upvotes: 0

Related Questions