@Override
  public int hashCode() {
    return new HashCodeBuilder(17, 37).append(getPayloadPath())
        .append(getPayloadSize())
        .append(getJobName())
        .append(getJobId())
        .append(getTaskName())
        .append(getStoreName())
        .toHashCode();
  }
Metadata associated with every BlobStore request. This class is used to trace a request and to determine the
bucket/container informationof the blob.
samza-api/src/main/java/org/apache/samza/storage/blobstore/Metadata.java