aws/aws-sdk-java-v2

Hi There,
I am facing a strange issue when I try to put objects with software.amazon.awssdk-S3 In java batch job environments. I am supposed to write a file to S3 in my writer job.
My thread disappears once it hit this line of code.

s3Client = S3Client.builder().region(getS3Region()).build();
No error log or anything.
Just look like the thread hang and after sometime thread start to execute from the beginning.
The most strange thing is my code working fine in my local machine and the issue only persists in the ec2.
I can only see bellow two logs
Putting Object to S3

public void putObject(String fileName, byte[] br) {

        LOGGER.debug("Putting Object to S3");

    try (S3Client s3Client = S3Client.builder().region(getS3Region()).build()) {
        LOGGER.debug("just before PutObjectRequest.build.");
        PutObjectRequest request = PutObjectRequest.builder().bucket(getS3BucketName()).key(fileName).build();
        LOGGER.debug("just before putObject call.");
        s3Client.putObject(request, RequestBody.fromBytes(br));
        LOGGER.debug("just after put Object Completed.");
    } catch (Exception ex) {
        LOGGER.error(ex);
        throw ex;
    } finally {
        LOGGER.debug("IN finally block");
    }

    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("put Object Completed.");
    }

}