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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-8392) DataNode refactoring to support multiple datasets
Date Wed, 13 May 2015 18:33:00 GMT
Arpit Agarwal created HDFS-8392:
-----------------------------------

             Summary: DataNode refactoring to support multiple datasets
                 Key: HDFS-8392
                 URL: https://issues.apache.org/jira/browse/HDFS-8392
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: datanode
            Reporter: Arpit Agarwal
            Assignee: Arpit Agarwal


For HDFS-7240 we would like to share available DataNode storage across HDFS blocks and Ozone
objects.

The DataNode already supports sharing available storage across multiple block pool IDs for
the federation feature. However all federated block pools use the same dataset implementation
i.e. {{FsDatasetImpl}}.

We can extend the DataNode to support multiple dataset implementations so the same storage
space can be shared across one or more HDFS block pools and one or more Ozone block pools.



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