• Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.0.0
    • 3.1.0, 2.10.0
    • None
    • Reviewed


      Now federation doesn't support set the global quota for each folder. Currently the quota will be applied for each subcluster under the specified folder via RPC call.
      It will be very useful for users that federation can support setting global quota and exposing the command of this.

      In a federated environment, a folder can be spread across multiple subclusters. For this reason, we plan to solve this by following way:

      1. Set global quota across each subcluster. We don't allow each subcluster can exceed maximun quota value.
      2. We need to construct one <Path, QuotaUsage> cache map for storing the sum quota usage of these subclusters under federation folder. Every time we want to do WRITE operation under specified folder, we will get its quota usage from cache and verify its quota. If quota exceeded, throw exception, otherwise update its quota usage in cache when finishing operations.

      The quota will be set to mount table and as a new field in mount table. The set/unset command will be like:

       hdfs dfsrouteradmin -setQuota -ns <nsQuota> -ss <ssQuota> <mount table>
       hdfs dfsrouteradmin -clrQuota  <mount table>


        1. RBF support global quota.pdf
          248 kB
          Yiqun Lin
        2. HDFS-12934.001.patch
          52 kB
          Yiqun Lin
        3. HDFS-12934.002.patch
          53 kB
          Yiqun Lin
        4. HDFS-12934.003.patch
          60 kB
          Yiqun Lin
        5. HDFS-12934.004.patch
          65 kB
          Yiqun Lin
        6. HDFS-12934.005.patch
          67 kB
          Yiqun Lin
        7. HDFS-12934.006.patch
          72 kB
          Yiqun Lin
        8. HDFS-12934.007.patch
          76 kB
          Yiqun Lin
        9. HDFS-12934.008.patch
          78 kB
          Yiqun Lin
        10. HDFS-12934-branch-2.001.patch
          78 kB
          Yiqun Lin
        11. HDFS-12934-branch-2.002.patch
          78 kB
          Yiqun Lin
        12. HDFS-12919-branch-3.001.patch
          48 kB
          Íñigo Goiri

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              linyiqun Yiqun Lin
              linyiqun Yiqun Lin
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