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HBASE-23744 - FastPathBalancedQueueRpcExecutor should enforce queue length of 0 

Closes #1094

Signed-off-by: Xu Cang <xucang@apache.org>
Signed-off-by: Nick Dimiduk <ndimiduk@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
This commit is contained in:
Geoffrey Jacoby 2020-07-13 12:08:59 +05:30 committed by Viraj Jasani
parent 724f0478ed
commit af1cc2fc44
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2 changed files with 31 additions and 0 deletions
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5
hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.java
View File

@ -64,6 +64,11 @@ public class FastPathBalancedQueueRpcExecutor extends BalancedQueueRpcExecutor {
@Override
public boolean dispatch(CallRunner callTask) throws InterruptedException {
//FastPathHandlers don't check queue limits, so if we're completely shut down
//we have to prevent ourselves from using the handler in the first place
if (currentQueueLimit == 0){
return false;
}
FastPathHandler handler = popReadyHandler();
return handler != null? handler.loadCallRunner(callTask): super.dispatch(callTask);
}

26
hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/TestSimpleRpcScheduler.java
View File

@ -40,6 +40,7 @@ import java.util.concurrent.BlockingQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.LinkedBlockingQueue;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Abortable;
import org.apache.hadoop.hbase.HBaseClassTestRule;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HConstants;
@ -53,8 +54,11 @@ import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.hadoop.hbase.util.Threads;
import org.junit.Before;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.TestName;
import org.mockito.Mockito;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import org.slf4j.Logger;
@ -75,6 +79,9 @@ public class TestSimpleRpcScheduler {
public static final HBaseClassTestRule CLASS_RULE =
HBaseClassTestRule.forClass(TestSimpleRpcScheduler.class);
@Rule
public TestName testName = new TestName();
private static final Logger LOG = LoggerFactory.getLogger(TestSimpleRpcScheduler.class);
private final RpcScheduler.Context CONTEXT = new RpcScheduler.Context() {
@ -560,6 +567,25 @@ public class TestSimpleRpcScheduler {
}
}
@Test
public void testFastPathBalancedQueueRpcExecutorWithQueueLength0() throws Exception {
String name = testName.getMethodName();
int handlerCount = 1;
String callQueueType = RpcExecutor.CALL_QUEUE_TYPE_CODEL_CONF_VALUE;
int maxQueueLength = 0;
PriorityFunction priority = mock(PriorityFunction.class);
Configuration conf = HBaseConfiguration.create();
Abortable abortable = mock(Abortable.class);
FastPathBalancedQueueRpcExecutor executor =
Mockito.spy(new FastPathBalancedQueueRpcExecutor(name,
handlerCount, callQueueType, maxQueueLength, priority, conf, abortable));
CallRunner task = mock(CallRunner.class);
assertFalse(executor.dispatch(task));
//make sure we never internally get a handler, which would skip the queue validation
Mockito.verify(executor, Mockito.never()).getHandler(Mockito.any(), Mockito.anyDouble(),
Mockito.any(), Mockito.any());
}
@Test
public void testMetaRWScanQueues() throws Exception {
Configuration schedConf = HBaseConfiguration.create();