add logs to debug

Author: sakthivelmanii

google-cloud-spanner/src/main/java/com/google/cloud/spanner/MultiplexedSessionDatabaseClient.java

@@ -417,10 +417,10 @@ void setPool(SessionPool pool) {
   }
 
   private void maybeWaitForSessionCreation(
-      SessionPoolOptions sessionPoolOptions, SettableApiFuture<SessionReference> future) {
+      SessionPoolOptions sessionPoolOptions, SettableApiFuture<SessionReference> initialSessionReferenceFuture) {
     Duration waitDuration = sessionPoolOptions.getWaitForMinSessions();
     SpannerException lastException = null;
-    SettableApiFuture<SessionReference> sessionReferenceFuture = future;
+    SettableApiFuture<SessionReference> sessionReferenceFuture = initialSessionReferenceFuture;
 
     if (waitDuration != null && !waitDuration.isZero()) {
       Instant endTime = Instant.now().plus(waitDuration);
@@ -433,6 +433,8 @@ private void maybeWaitForSessionCreation(
         }
         // Calculate the remaining time pending for the future to wait for multiplexed session
         Duration remainingTime = Duration.between(Instant.now(), endTime);
+        System.out.println("Is ended: " + Instant.now().isBefore(endTime));
+        System.out.println("Remaining time: " + remainingTime.toMillis());
         try {
           sessionReferenceFuture.get(remainingTime.toMillis(), TimeUnit.MILLISECONDS);
           lastException = null;

google-cloud-spanner/src/test/java/com/google/cloud/spanner/MultiplexedSessionDatabaseClientMockServerTest.java

@@ -393,6 +393,7 @@ public void testRetryWithDelayedInResponseExceedsSessionCreationWaitTime() {
             .build()
             .getService();
 
+    System.out.println("---------------START------------------------");
     SpannerException spannerException =
         assertThrows(
             SpannerException.class,
@@ -407,6 +408,7 @@ public void testRetryWithDelayedInResponseExceedsSessionCreationWaitTime() {
                 }
               }
             });
+    System.out.println("--------------END-----------------------");
     assertEquals(ErrorCode.DEADLINE_EXCEEDED, spannerException.getErrorCode());
 
     List<CreateSessionRequest> createSessionRequests =