egor-ryashin commented on a change in pull request #6349: maintenance mode for
Historical
URL: https://github.com/apache/incubator-druid/pull/6349#discussion_r221228691
##########
File path:
server/src/test/java/org/apache/druid/server/coordinator/DruidCoordinatorBalancerTest.java
##########
@@ -195,6 +201,186 @@ public void testMoveToEmptyServerBalancer()
Assert.assertEquals(2,
params.getCoordinatorStats().getTieredStat("movedCount", "normal"));
}
+ /**
+ * Server 1 has 2 segments.
+ * Server 2 (maintenance) has 2 segments.
+ * Server 3 is empty.
+ * Maintenance has priority 7.
+ * Max segments to move is 3.
+ * 2 (of 2) segments should be moved from Server 2 and 1 (of 2) from Server
1.
+ */
+ @Test
+ public void testMoveMaintenancePriority()
+ {
+ mockDruidServer(druidServer1, "1", "normal", 30L, 100L,
ImmutableMap.of(segment1.getIdentifier(), segment1, segment2.getIdentifier(),
segment2));
+ mockDruidServer(druidServer2, "2", "normal", 30L, 100L,
ImmutableMap.of(segment3.getIdentifier(), segment3, segment4.getIdentifier(),
segment4));
+ mockDruidServer(druidServer3, "3", "normal", 0L, 100L,
Collections.emptyMap());
+
+ EasyMock.replay(druidServer4);
+
+ mockCoordinator(coordinator);
+
+ BalancerStrategy strategy = EasyMock.createMock(BalancerStrategy.class);
+ EasyMock.expect(strategy.pickSegmentToMove(ImmutableList.of(new
ServerHolder(druidServer2, peon2, false))))
+ .andReturn(new BalancerSegmentHolder(druidServer2, segment3))
+ .andReturn(new BalancerSegmentHolder(druidServer2, segment4));
+ EasyMock.expect(strategy.pickSegmentToMove(anyObject()))
+ .andReturn(new BalancerSegmentHolder(druidServer1, segment1))
+ .andReturn(new BalancerSegmentHolder(druidServer1, segment2));
+
+ EasyMock.expect(strategy.findNewSegmentHomeBalancer(anyObject(),
anyObject())).andReturn(new ServerHolder(druidServer3, peon3)).anyTimes();
+ replay(strategy);
+
+ DruidCoordinatorRuntimeParams params = defaultRuntimeParamsBuilder(
+ ImmutableList.of(druidServer1, druidServer2, druidServer3),
+ ImmutableList.of(peon1, peon2, peon3),
+ ImmutableList.of(false, true, false)
+ )
+ .withDynamicConfigs(
+ CoordinatorDynamicConfig.builder()
Review comment:
:white_check_mark:
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