@Parameterized.Parameters(name = "replicas:{0} scheduler:{1} selector:{2}")
  public static Object[][] params() {
    return new Object[][] {
      { 1, new ScheduleServerCrashProcedure(), new PrimaryNotMetaRegionSelector() },
      { 3, new ScheduleServerCrashProcedure(), new ReplicaNonMetaRegionSelector() },
      { 1, new ScheduleSCPsForUnknownServers(), new PrimaryNotMetaRegionSelector() },
      { 3, new ScheduleSCPsForUnknownServers(), new ReplicaNonMetaRegionSelector() } };
  }
Test of the HBCK-version of SCP. The HBCKSCP is an SCP only it reads hbase:meta for list of
Regions that were on the server-to-process rather than consult Master in-memory-state.
hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestHBCKSCP.java