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  1. Hadoop Map/Reduce
  2. MAPREDUCE-1837

Raid should store the metadata in HDFS

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: 0.22.0
    • Fix Version/s: None
    • Component/s: contrib/raid
    • Labels:
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      Description

      Currently if you change the stripe length in the raid policy. The existing raided files cannot be recovered.
      Also in the future if we want to upgrade to a better erasure code such as Reed-Solomon or LDPC and change the policy for that.
      The same problem will happen. We can avoid this problem if we store the information in a metadata file.

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              • Assignee:
                schen Scott Chen
                Reporter:
                schen Scott Chen
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                • Created:
                  Updated:
                  Resolved: