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  1. Hadoop HDFS
  2. HDFS-7541

Upgrade Domains in HDFS

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.9.0, 3.0.0-alpha1, 2.8.2
    • Component/s: None
    • Labels:
      None

      Description

      Current HDFS DN rolling upgrade step requires sequential DN restart to minimize the impact on data availability and read/write operations. The side effect is longer upgrade duration for large clusters. This might be acceptable for DN JVM quick restart to update hadoop code/configuration. However, for OS upgrade that requires machine reboot, the overall upgrade duration will be too long if we continue to do sequential DN rolling restart.

        Attachments

        1. UpgradeDomains_Design_v3.pdf
          242 kB
          Ming Ma
        2. HDFS-7541-2.patch
          89 kB
          Ming Ma
        3. HDFS-7541.patch
          67 kB
          Ming Ma
        4. UpgradeDomains_design_v2.pdf
          288 kB
          Ming Ma
        5. SupportforfastHDFSdatanoderollingupgrade.pdf
          125 kB
          Ming Ma

          Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. HDFS-14637 Namenode may not replicate blocks to meet the policy after enabling upgradeDomain

          • Major - Major loss of function.
          • Resolved

          New Feature - A new feature of the product, which has yet to be developed. AMBARI-24301 API for HDFS Upgrade Domains management for scripted node additions

          • Major - Major loss of function.
          • Open

          New Feature - A new feature of the product, which has yet to be developed. HDFS-8789 Block Placement policy migrator

          • Major - Major loss of function.
          • Open

          New Feature - A new feature of the product, which has yet to be developed. HDFS-7877 [Umbrella] Support maintenance state for datanodes

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-13742 HDFS Upgrade Domains dynamic placement policy using dfsadmin commands and scripting API to be automation friendly for scripted datanode additions to clusters

          • Major - Major loss of function.
          • Open
          relates to

          New Feature - A new feature of the product, which has yet to be developed. YARN-8256 Pluggable provider for node membership management

          • Major - Major loss of function.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-1431 Balancer should work with the logic of BlockPlacementPolicy

          • Major - Major loss of function.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-3566 Custom Replication Policy for Azure

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-13739 Option to disable Rack Local Write Preference to avoid 2 issues - 1. Rack-by-Rack Maintenance leaves last data replica at risk, 2. avoid Major Storage Imbalance across DataNodes caused by uneven spread of Datanodes across Racks

          • Major - Major loss of function.
          • Patch Available
          There are no Sub-Tasks for this issue.

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              • Assignee:
                mingma Ming Ma
                Reporter:
                mingma Ming Ma
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                Dates

                • Created:
                  Updated:
                  Resolved: