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  1. Hadoop HDFS
  2. HDFS-6093

Expose more caching information for debugging by users

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    Details

    • Type: Improvement
    • Status: Patch Available
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 2.4.0
    • Fix Version/s: None
    • Component/s: caching
    • Labels:

      Description

      When users submit a new cache directive, it's unclear if the NN has recognized it and is actively trying to cache it, or if it's hung for some other reason. It'd be nice to expose a "pending caching/uncaching" count the same way we expose pending replication work.

      It'd also be nice to display the aggregate cache capacity and usage in dfsadmin -report, since we already have have it as a metric and expose it per-DN in report output.

        Attachments

        1. hdfs-6093-4.patch
          32 kB
          Andrew Wang
        2. hdfs-6093-3.patch
          32 kB
          Andrew Wang
        3. hdfs-6093-2.patch
          32 kB
          Andrew Wang
        4. hdfs-6093-1.patch
          28 kB
          Andrew Wang

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              • Assignee:
                andrew.wang Andrew Wang
                Reporter:
                andrew.wang Andrew Wang
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                Dates

                • Created:
                  Updated: