HBASE-13917 Remove string comparison to identify request priority

hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RWQueueRpcExecutor.java

@@ -33,6 +33,9 @@ import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.Action;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiRequest;
+import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateRequest;
+import org.apache.hadoop.hbase.protobuf.generated
+  .RegionServerStatusProtos.ReportRegionStateTransitionRequest;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.RegionAction;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanRequest;
 import org.apache.hadoop.hbase.protobuf.generated.RPCProtos.RequestHeader;
@@ -173,8 +176,7 @@ public class RWQueueRpcExecutor extends RpcExecutor {
 
   private boolean isWriteRequest(final RequestHeader header, final Message param) {
     // TODO: Is there a better way to do this?
-    String methodName = header.getMethodName();
+    if (param instanceof MultiRequest) {
-    if (methodName.equalsIgnoreCase("multi") && param instanceof MultiRequest) {
       MultiRequest multi = (MultiRequest)param;
       for (RegionAction regionAction : multi.getRegionActionList()) {
         for (Action action: regionAction.getActionList()) {
@@ -184,18 +186,17 @@ public class RWQueueRpcExecutor extends RpcExecutor {
         }
       }
     }
-    if (methodName.equalsIgnoreCase("mutate")) {
+    if (param instanceof MutateRequest) {
       return true;
     }
-    if (methodName.equalsIgnoreCase("ReportRegionStateTransition")) {
+    if (param instanceof ReportRegionStateTransitionRequest) {
       return true;
     }
     return false;
   }
 
   private boolean isScanRequest(final RequestHeader header, final Message param) {
-    String methodName = header.getMethodName();
+    if (param instanceof ScanRequest) {
-    if (methodName.equalsIgnoreCase("scan")) {
       // The first scan request will be executed as a "short read"
       ScanRequest request = (ScanRequest)param;
       return request.hasScannerId();

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/AnnotationReadingPriorityFunction.java

@@ -198,7 +198,7 @@ class AnnotationReadingPriorityFunction implements PriorityFunction {
     if (param == null) {
       return HConstants.NORMAL_QOS;
     }
-    if (methodName.equalsIgnoreCase("multi") && param instanceof MultiRequest) {
+    if (param instanceof MultiRequest) {
       // The multi call has its priority set in the header.  All calls should work this way but
       // only this one has been converted so far.  No priority == NORMAL_QOS.
       return header.hasPriority()? header.getPriority(): HConstants.NORMAL_QOS;
@@ -232,7 +232,7 @@ class AnnotationReadingPriorityFunction implements PriorityFunction {
       return HConstants.NORMAL_QOS;
     }
 
-    if (methodName.equalsIgnoreCase("scan")) { // scanner methods...
+    if (param instanceof ScanRequest) { // scanner methods...
       ScanRequest request = (ScanRequest)param;
       if (!request.hasScannerId()) {
         return HConstants.NORMAL_QOS;
@@ -249,7 +249,7 @@ class AnnotationReadingPriorityFunction implements PriorityFunction {
 
     // If meta is moving then all the rest of report the report state transitions will be
     // blocked. We shouldn't be in the same queue.
-    if (methodName.equalsIgnoreCase("ReportRegionStateTransition")) { // Regions are moving
+    if (param instanceof ReportRegionStateTransitionRequest) { // Regions are moving
       ReportRegionStateTransitionRequest tRequest = (ReportRegionStateTransitionRequest) param;
       for (RegionStateTransition transition : tRequest.getTransitionList()) {
         if (transition.getRegionInfoList() != null) {
@@ -274,8 +274,7 @@ class AnnotationReadingPriorityFunction implements PriorityFunction {
    */
   @Override
   public long getDeadline(RequestHeader header, Message param) {
-    String methodName = header.getMethodName();
+    if (param instanceof ScanRequest) {
-    if (methodName.equalsIgnoreCase("scan")) {
       ScanRequest request = (ScanRequest)param;
       if (!request.hasScannerId()) {
         return 0;

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

@@ -27,12 +27,15 @@ import com.google.protobuf.Message;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.HBaseConfiguration;
 import org.apache.hadoop.hbase.HConstants;
+import org.apache.hadoop.hbase.client.Put;
 import org.apache.hadoop.hbase.security.User;
 import org.apache.hadoop.hbase.testclassification.SmallTests;
 import org.apache.hadoop.hbase.ipc.RpcServer.Call;
+import org.apache.hadoop.hbase.protobuf.RequestConverter;
 import org.apache.hadoop.hbase.protobuf.generated.RPCProtos;
 import org.apache.hadoop.hbase.protobuf.generated.RPCProtos.RequestHeader;
 import org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanRequest;
+import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.hadoop.hbase.util.Threads;
 import org.junit.Before;
 import org.junit.Test;
@@ -247,6 +250,8 @@ public class TestSimpleRpcScheduler {
 
       CallRunner putCallTask = mock(CallRunner.class);
       RpcServer.Call putCall = mock(RpcServer.Call.class);
+      putCall.param = RequestConverter.buildMutateRequest(
+          Bytes.toBytes("abc"), new Put(Bytes.toBytes("row")));
       RequestHeader putHead = RequestHeader.newBuilder().setMethodName("mutate").build();
       when(putCallTask.getCall()).thenReturn(putCall);
       when(putCall.getHeader()).thenReturn(putHead);