Spotbugs issue fixed

Author: inv-jishnu

data-loader/cli/src/main/java/com/scalar/db/dataloader/cli/command/dataexport/ExportCommand.java

@@ -72,7 +72,6 @@ public Integer call() throws Exception {
 
       ExportManager exportManager =
           createExportManager(scalarDbMode, scalarDbDao, outputFormat, scalarDbPropertiesFilePath);
-      System.out.println(scalarDbMode);
       TableMetadata tableMetadata = tableMetadataService.getTableMetadata(namespace, table);
 
       Key partitionKey =

data-loader/core/src/main/java/com/scalar/db/dataloader/core/dataexport/ExportManager.java

@@ -145,10 +145,15 @@ public ExportReport startExport(
 
         shutdownExecutor(executorService);
         processFooter(exportOptions, tableMetadata, bufferedWriter);
+      } catch (TransactionException e) {
+        throw new RuntimeException(e);
       }
 
-    } catch (Exception e) {
-      logger.error("Export failed", e);
+    } catch (ExportOptionsValidationException
+        | IOException
+        | ScalarDbDaoException
+        | InterruptedException e) {
+      logger.error("Error during export: {}", e.getMessage());
     } finally {
       if (executorService != null && !executorService.isShutdown()) {
         executorService.shutdownNow();