[HBASE-10137] GeneralBulkAssigner with retain assignment plan can be used in EnableTableHandler to bulk assign the regions

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.96.0, 0.94.14
• Fix Version/s: 0.98.0, 0.96.2, 0.99.0
• Component/s: Region Assignment
• Hadoop Flags: Reviewed
• Assignee: rajeshbabu
• Reporter: rajeshbabu
• Created: 12/Dec/13 01:45
• Updated: 21/Feb/15 23:31
• Resolved: 18/Dec/13 01:46

Description

Current in BulkEnabler we are assigning one region at a time, instead we can use GeneralBulkAssigner to bulk assign multiple regions at a time.

      for (HRegionInfo region : regions) {
        if (assignmentManager.getRegionStates()
            .isRegionInTransition(region)) {
          continue;
        }
        final HRegionInfo hri = region;
        pool.execute(Trace.wrap("BulkEnabler.populatePool",new Runnable() {
          public void run() {
            assignmentManager.assign(hri, true);
          }
        }));
      }

Issue Links

• is related to: HBASE-10136 the table-lock of TableEventHandler is released too early because reOpenAllRegions() is asynchronous