[HDFS-3970] BlockPoolSliceStorage#doRollback(..) should use BlockPoolSliceStorage instead of DataStorage to read prev version file.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.2-alpha, 3.0.0-alpha1
• Fix Version/s: 2.0.3-alpha, 0.23.10
• Component/s: datanode
• Target Version/s: 2.0.3-alpha
• Hadoop Flags: Reviewed
• Assignee: Vinayakumar B
• Reporter: Vinayakumar B
• Created: 25/Sep/12 13:32
• Updated: 12/May/16 18:18
• Resolved: 07/Jan/13 21:51

Description

    // read attributes out of the VERSION file of previous directory
    DataStorage prevInfo = new DataStorage();
    prevInfo.readPreviousVersionProperties(bpSd);

In the above code snippet BlockPoolSliceStorage instance should be used. other wise rollback results in 'storageType' property missing which will not be there in initial VERSION file.