sunhelly commented on a change in pull request #323: HBASE-22414 Interruption
of moving regions in RSGroup will cause regi…
URL: https://github.com/apache/hbase/pull/323#discussion_r302401190
##########
File path:
hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsAdmin2.java
##########
@@ -459,4 +464,250 @@ public boolean evaluate() throws Exception {
Assert.assertEquals(null, rsGroupAdmin.getRSGroupInfo(fooGroup.getName()));
}
+ @Test
+ public void testFailedMoveBeforeRetryExhaustedWhenMoveServer() throws
Exception {
+ String groupName = getGroupName(name.getMethodName());
+ rsGroupAdmin.addRSGroup(groupName);
+ final RSGroupInfo newGroup = rsGroupAdmin.getRSGroupInfo(groupName);
+ final byte[] familyNameBytes = Bytes.toBytes("f");
+ final int tableRegionCount = 10;
+ // All the regions created below will be assigned to the default group.
+ TEST_UTIL.createMultiRegionTable(tableName, familyNameBytes,
tableRegionCount);
+ TEST_UTIL.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
+ @Override
+ public boolean evaluate() throws Exception {
+ List<String> regions = getTableRegionMap().get(tableName);
+ if (regions == null) {
+ return false;
+ }
+ return getTableRegionMap().get(tableName).size() >= tableRegionCount;
+ }
+ });
+
+ Pair<ServerName, RegionStateNode> gotPair = setARegionState(newGroup);
+
+ // start thread to recover region state
+ final ServerName movedServer = gotPair.getFirst();
+ final RegionStateNode rsn = gotPair.getSecond();
+ AtomicBoolean changed = new AtomicBoolean(false);
+ Thread t1 = new Thread(() -> {
Review comment:
Here the added thread will be concurrently with the UT running thread. I
designed this to help make the actions of recovering region state and moving
regions concurrently. As a result, during one call of move and after some
failed retries, the chosen region will be moved successfully, like the real
production situation. Waiter.Predicate.evaluate will make the UT wait on its
evaluate method, if move operations of RSGroup is Async, it may be helpful.
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