Uploaded image for project: 'Hadoop HDFS'
  1. Hadoop HDFS
  2. HDFS-6122

Rebalance cached replicas between datanodes

    XMLWordPrintableJSON

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 2.3.0
    • Fix Version/s: None
    • Component/s: caching
    • Labels:
      None

      Description

      It'd be nice if the NameNode was able to rebalance cache usage among datanodes. This would help avoid situations where the only three DNs with a replica are full and there is still cache space on the rest of the cluster. It'll also probably help for heterogeneous node sizes and when adding new nodes to the cluster or doing a rolling restart.

        Attachments

          Activity

            People

            • Assignee:
              andrew.wang Andrew Wang
              Reporter:
              andrew.wang Andrew Wang
            • Votes:
              0 Vote for this issue
              Watchers:
              6 Start watching this issue

              Dates

              • Created:
                Updated: