listIncompleteUpload Method doesn't work as expected

[RitikRajSrivastava]

listMultipartUpload doesn't work as explained here : https://docs.min.io/docs/java-client-api-reference.html#listIncompleteUploads

Expected Behavior

listMultipartUpload must be able to list the multipart upload for objects.

Current Behavior

listMultipartUpload method always return an empty list .

Possible Solution

Steps to Reproduce (for bugs)

1.Upload a 200MB object to minio.
2. Abort the upload.
3. list the incomplete Upload by using the listMultipartUpload method of minio sdk
4.

Context

Regression

Your Environment

• Version used (minio --version): RELEASE.2021-02-19T04-38-02Z
• Server setup and configuration: 4 server with 4 disks
• Operating System and version (uname -a): Linux itom-di-minio-0 3.10.0-957.1.3.el7.x86_64

[balamurugana]

@RitikRajSrivastava Reopen this issue with below information

1. Make sure you are using the latest version of minio-java v8.1.0
2. Provide a code causes the issue
3. Enable traceOn() and provide the output.

[balamurugana]

Refer #1166

[RitikRajSrivastava]

Hi @balamurugana , Thanks for the response.
Yes we are using minio-java 8.1.0 only.
Snippet to reproduce the issue :
Upload Object :
ObjectWriteResponse objectWriteResponse = minioClient.uploadObject(
(UploadObjectArgs.builder()
.bucket(bucketName)).object(file.getName()).
filename(file.getCanonicalPath()).
contentType("application/csv").region("us-east-1").
build());

listIncompleteUploads:

public class listIncomplete extends MinioClient{
public listIncomplete(MinioClient client) {
super(client);
}

public static void main(String args[]) throws
        IOException, InvalidKeyException, NoSuchAlgorithmException,
        InsufficientDataException, ServerException, InternalException,
        XmlParserException, InvalidResponseException, ErrorResponseException {


 listIncomplete listIncomplete = new listIncomplete(buildMinIOClient());

            ListMultipartUploadsResponse listMultipartUploadsResponse =
                    listIncomplete.listMultipartUploads("nomperfbucket",
                            "us-east-1", null, "UTF-8",
                            null, null, "1614",
                            null, null, null);

            ListMultipartUploadsResult result = listMultipartUploadsResponse.result();
            for(Upload upload : result.uploads()){
                System.out.println(upload.objectName());
                System.out.println(upload.uploadId());
            }

}

[balamurugana]

@RitikRajSrivastava uploadObject() and putObject() never leave incomplete uploads i.e. if case of error, those APIs calls abort multipart upload API.

[RitikRajSrivastava]

@balamurugana , thanks .. But what I am seeing , there are folders inside multipart folder which are not getting cleaned up.
As when i am listing incompleteUploads i am getting empty list , How could I clean those residue folder under multipart folder.

[balamurugana]

Join to minio slack and get discussed about that.