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  1. Hadoop HDFS
  2. HDFS-9808

Combine READ_ONLY_SHARED DatanodeStorages with the same ID

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    Details

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

      In HDFS-5318, each datanode that can reach a (read only) block reports itself as a valid location for the block. While accurate, this increases (redundant) block report traffic and- without partitioning on the backend- may return an overwhelming number of replica locations for each block.

      Instead, a DN could report only that the shared storage is reachable. The contents of the storage could be reported separately/synthetically to the block manager, which can collapse all instances into a single storage. A subset of locations- closest to the client, etc.- can be returned, rather than all possible locations.

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              • Assignee:
                Unassigned
                Reporter:
                cdouglas Christopher Douglas
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                • Created:
                  Updated:
                  Resolved: