Vinay created HDFS-3970:
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Summary: BlockPoolSliceStorage#doRollback(..) should use
BlockPoolSliceStorage instead of DataStorage to read prev version file.
Key: HDFS-3970
URL: https://issues.apache.org/jira/browse/HDFS-3970
Project: Hadoop HDFS
Issue Type: Bug
Components: data-node
Affects Versions: 3.0.0, 2.0.2-alpha
Reporter: Vinay
Assignee: Vinay
{code} // read attributes out of the VERSION file of previous directory
DataStorage prevInfo = new DataStorage();
prevInfo.readPreviousVersionProperties(bpSd);{code}
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.
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