YARN-10997. Revisit allocation and reservation logging. Contributed by Andras Gyori

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacityScheduler.java

@@ -3294,13 +3294,11 @@ public boolean tryCommit(Resource cluster, ResourceCommitRequest r,
           long commitSuccess = System.nanoTime() - commitStart;
           CapacitySchedulerMetrics.getMetrics()
               .addCommitSuccess(commitSuccess);
-          LOG.info("Allocation proposal accepted");
           isSuccess = true;
         } else{
           long commitFailed = System.nanoTime() - commitStart;
           CapacitySchedulerMetrics.getMetrics()
               .addCommitFailure(commitFailed);
-          LOG.info("Failed to accept allocation proposal");
         }
 
         LOG.debug("Allocation proposal accepted={}, proposal={}", isSuccess,

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/common/fica/FiCaSchedulerApp.java

@@ -357,6 +357,7 @@ private boolean commonCheckContainerAllocation(
       // adding NP check as this proposal could not be allocated from reserved
       // container in async-scheduling mode
       if (allocation.getAllocateFromReservedContainer() == null) {
+        LOG.debug("Trying to allocate from reserved container in async scheduling mode");
         return false;
       }
       RMContainer fromReservedContainer =
@@ -572,6 +573,8 @@ public boolean apply(Resource cluster, ResourceCommitRequest<FiCaSchedulerApp,
         if (updatePending &&
             getOutstandingAsksCount(schedulerContainer.getSchedulerRequestKey())
                 <= 0) {
+          LOG.debug("Rejecting appliance of allocation due to existing pending allocation " +
+              "request for " + schedulerContainer);
           return false;
         }
 
@@ -670,10 +673,12 @@ public boolean apply(Resource cluster, ResourceCommitRequest<FiCaSchedulerApp,
               schedulerContainer.getRmContainer().getContainer(),
               reReservation);
 
-          LOG.info("Reserved container=" + rmContainer.getContainerId()
-              + ", on node=" + schedulerContainer.getSchedulerNode()
-              + " with resource=" + rmContainer
-              .getAllocatedOrReservedResource());
+          if (LOG.isDebugEnabled()) {
+            LOG.debug("Reserved container=" + rmContainer.getContainerId()
+                + ", on node=" + schedulerContainer.getSchedulerNode()
+                + " with resource=" + rmContainer
+                .getAllocatedOrReservedResource());
+          }
         }
       }
     } finally {