HBase
  1. HBase
  2. HBASE-2357

Coprocessors: Add read-only region replicas (slaves) for availability and fast region recovery

    Details

    • Type: New Feature New Feature
    • Status: Open
    • Priority: Major Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: master, regionserver
    • Labels:
      None

      Description

      I dont plan on working on this in the short term, but the idea is to extend region ownership to have two modes. Each region has one primary region server and N slave region servers. The slaves would follow the master (probably by streaming the relevant HLog entries directly from it) and be able to serve stale reads. The benefit is twofold: (a) provides the ability to spread read load, (b) enables very fast region failover/rebalance since the memstore is already nearly up to date on the slave RS.

        Issue Links

          Activity

          Todd Lipcon created issue -
          Andrew Purtell made changes -
          Field Original Value New Value
          Link This issue relates to HBASE-2001 [ HBASE-2001 ]
          Andrew Purtell made changes -
          Link This issue relates to HBASE-2002 [ HBASE-2002 ]
          Andrew Purtell made changes -
          Parent HBASE-2000 [ 12441373 ]
          Issue Type New Feature [ 2 ] Sub-task [ 7 ]
          Andrew Purtell made changes -
          Summary Add read-only region replicas (slaves) for availability and fast region recovery Coprocessors: Add read-only region replicas (slaves) for availability and fast region recovery
          Andrew Purtell made changes -
          Assignee Andrew Purtell [ apurtell ]
          Andrew Purtell made changes -
          Parent HBASE-2000 [ 12441373 ]
          Issue Type Sub-task [ 7 ] New Feature [ 2 ]
          Andrew Purtell made changes -
          Assignee Andrew Purtell [ apurtell ]
          Enis Soztutar made changes -
          Link This issue is related to HBASE-10070 [ HBASE-10070 ]

            People

            • Assignee:
              Unassigned
              Reporter:
              Todd Lipcon
            • Votes:
              3 Vote for this issue
              Watchers:
              24 Start watching this issue

              Dates

              • Created:
                Updated:

                Development