Allow User Configured HDFS Replication Parameter for DiskHDFS and StorageHDFS

Why it matters

This feature allows users to specify the replication factor used by HDFS when storing data via DiskHDFS and StorageHDFS, providing better control over data redundancy and fault tolerance according to their infrastructure requirements.

How to use it

To use this feature, set the hdfs_replication parameter in the configuration of DiskHDFS or StorageHDFS. This parameter determines the replication factor for HDFS storage operations, for example:

<disk>
  <type>hdfs</type>
  <hdfs_replication>3</hdfs_replication>
  ...
</disk>