listObjectsV2 causes endless loop > 1000 items

Using the new (default) listObjectsV2 to list objects causes an endless loop when there are more than 1000 items returned by the server and recursive is set to true. The iterator will list the first 1000 items over and over again.

I guess there is some error in the continuation token logic in the java client.

To reproduce, create 1001 items in a bucket and use the simplistic code below to list them:

    private static void testEndlessLoop(){

        MinioClient minioClient = null;
        try {
            minioClient = new MinioClient(
                    "http://myminio.lan:9000",
                    accessKey,
                    accessSecret);


            Iterable<Result<Item>> iterable = minioClient.listObjects(
                    "mybucket",
                    "some/prefix/",
                    true,
                    false);  // if set to true it works, using V1
            

            iterable.forEach(o -> {
                try {
                    System.out.println(o.get().objectName());
                } catch (Exception e) {
                    e.printStackTrace();
                }
            });
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

If you have trouble reproducing it on your end let me know.

Versions minio-java 3.0.4 minio RELEASE.2017-05-05T01-14-51Z

[harshavardhana]

@harshavardhana any chance of a new release which contains this fix? While the problem is not really an issue for me (as I switched back to the v1 api), all new users have a non working default configuration as V2 has been made the default.

Sure we will make a new release soon @IsNull - thanks for getting back to us.

[klingtnet]

This is also an issue for the latest minio-go. See #719 in minio-go.