DRILL-7764: Cleanup warning messages in GuavaPatcher class (#2093)

* DRILL-7764: Cleanup warning messages in GuavaPatcher class

Author: KazydubB

common/src/main/java/org/apache/drill/common/util/GuavaPatcher.java

@@ -73,10 +73,15 @@ private static void patchStopwatch() {
 
       logger.info("Google's Stopwatch patched for old HBase Guava version.");
     } catch (Exception e) {
-      logger.warn("Unable to patch Guava classes.", e);
+      logUnableToPatchException(e);
     }
   }
 
+  private static void logUnableToPatchException(Exception e) {
+    logger.warn("Unable to patch Guava classes: {}", e.getMessage());
+    logger.debug("Exception:", e);
+  }
+
   private static void patchCloseables() {
     try {
       ClassPool cp = getClassPool();
@@ -93,7 +98,7 @@ private static void patchCloseables() {
 
       logger.info("Google's Closeables patched for old HBase Guava version.");
     } catch (Exception e) {
-      logger.warn("Unable to patch Guava classes.", e);
+      logUnableToPatchException(e);
     }
   }
 
@@ -191,7 +196,7 @@ private static void patchPreconditions() {
       cc.toClass();
       logger.info("Google's Preconditions were patched to hold new methods.");
     } catch (Exception e) {
-      logger.warn("Unable to patch Guava classes.", e);
+      logUnableToPatchException(e);
     }
   }