[controller][server] Reduce logging in controller, server (#577)

For stores without pushstatus system store, controller logs get flooded with full excception stacktrace. Also in server most of the time RMD file sst writer are empty, so do not print any warn log for it.
Co-authored-by: Sourav Maji <[email protected]>

clients/da-vinci-client/src/main/java/com/linkedin/davinci/store/rocksdb/RocksDBSstFileWriter.java

@@ -257,7 +257,7 @@ public Map<String, String> sync() {
                     + recordNumInLastSSTFile + ", latency(ms): " + LatencyUtils.getElapsedTimeInMs(startMs));
           }
         }
-      } else {
+      } else if (!isRMD) {
         LOGGER.warn(
             "Sync gets invoked for store: {}, partition id: {}, but the last sst file: {} is empty",
             storeName,

services/venice-controller/src/main/java/com/linkedin/venice/pushmonitor/PushStatusCollector.java

@@ -143,7 +143,7 @@ private void scanDaVinciPushStatus() {
       try {
         pushStatus = future.get();
       } catch (Exception e) {
-        LOGGER.error("Caught exception when getting future result of push status.", e);
+        LOGGER.error("Caught exception when getting future result of push status : " + e.getMessage());
         continue;
       }
       ExecutionStatusWithDetails daVinciStatus = pushStatus.getDaVinciStatus();