Package org.apache.accumulo.server.master.balancer

Examples of org.apache.accumulo.server.master.balancer.SimpleLoggerBalancer.balance()

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    SimpleLoggerBalancer balancer = new SimpleLoggerBalancer(0);
    List<String> loggers = Arrays.asList("logger1", "logger2", "logger3", "logger4");
    LoggerUser[] tservers = {new TabletServer("tserv1", "logger1", "logger2"), new TabletServer("tserv2", "logger1", "logger2"),
        new TabletServer("tserv3", "logger1", "logger2")};
    Map<LoggerUser,List<String>> assignmentsOut = new HashMap<LoggerUser,List<String>>();
    balancer.balance(Arrays.asList(tservers), loggers, assignmentsOut, 2);
    Map<String,Integer> computeUses = computeUses(tservers, assignmentsOut, 2);
    assertTrue(computeUses.get("logger1") <= 2);
    assertTrue(computeUses.get("logger2") <= 2);
    assertTrue(computeUses.get("logger3") <= 2);
    assertTrue(computeUses.get("logger4") <= 2);
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    LoggerUser[] tservers = new LoggerUser[MANY];
    for (int i = 0; i < MANY; i++) {
      tservers[i] = new TabletServer(String.format("tserv%s", i), "logger0", "logger1");
    }
    Map<LoggerUser,List<String>> assignmentsOut = new HashMap<LoggerUser,List<String>>();
    balancer.balance(Arrays.asList(tservers), loggers, assignmentsOut, 2);
    Map<String,Integer> computeUses = computeUses(tservers, assignmentsOut, 2);
    for (String logger : loggers) {
      assertTrue(computeUses.get(logger) == 2);
    }
  }
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