Fix error messages in BQ Output Format

src/main/java/io/cdap/plugin/gcp/bigquery/sink/BigQueryOutputFormat.java

@@ -170,30 +170,24 @@ public void checkOutputSpecs(JobContext job) throws FileAlreadyExistsException,
     // Error if the output path already exists.
     FileSystem outputFileSystem = outputPath.getFileSystem(conf);
     if (outputFileSystem.exists(outputPath)) {
-      String errorMessage = String.format("The output path '%s' already exists.", outputPath);
-      throw ErrorUtils.getProgramFailureException(
-        new ErrorCategory(ErrorCategory.ErrorCategoryEnum.PLUGIN), errorMessage,
-        String.format(errorMessageFormat, ErrorPhase.VALIDATING_OUTPUT_SPECS, errorMessage), ErrorType.SYSTEM, true,
-        new IOException(errorMessage));
+      throw new IOException("The output path '" + outputPath + "' already exists.");
     }
 
     // Error if compression is set as there's mixed support in BigQuery.
     if (FileOutputFormat.getCompressOutput(job)) {
       String errorMessage = "Compression isn't supported for this OutputFormat.";
       throw ErrorUtils.getProgramFailureException(
         new ErrorCategory(ErrorCategory.ErrorCategoryEnum.PLUGIN), errorMessage,
-        String.format(errorMessageFormat, ErrorPhase.VALIDATING_OUTPUT_SPECS, errorMessage), ErrorType.SYSTEM, true,
-        new IOException(errorMessage));
+        String.format(errorMessageFormat, ErrorPhase.VALIDATING_OUTPUT_SPECS, errorMessage),
+          ErrorType.SYSTEM, true, new IOException(errorMessage));
     }
 
     // Error if unable to create a BigQuery helper.
     try {
       new BigQueryFactoryWithScopes(GCPUtils.BIGQUERY_SCOPES).getBigQueryHelper(conf);
     } catch (GeneralSecurityException gse) {
-      String errorMessage = "Failed to create BigQuery client";
-      throw ErrorUtils.getProgramFailureException(
-        new ErrorCategory(ErrorCategory.ErrorCategoryEnum.PLUGIN), errorMessage, String.format(errorMessageFormat,
-          ErrorPhase.VALIDATING_OUTPUT_SPECS, errorMessage), ErrorType.SYSTEM, true, gse);
+      throw new IOException(String.format("Failed to create BigQuery client %s: %s",
+          gse.getClass().getName(), gse.getMessage()), gse);
     }
 
     // Let delegate process its checks.
@@ -223,11 +217,9 @@ public static class BigQueryOutputCommitter extends ForwardingBigQueryFileOutput
       try {
         BigQueryFactory bigQueryFactory = new BigQueryFactoryWithScopes(GCPUtils.BIGQUERY_SCOPES);
         this.bigQueryHelper = bigQueryFactory.getBigQueryHelper(context.getConfiguration());
-      } catch (GeneralSecurityException e) {
-        String errorMessage = "Failed to create BigQuery client";
-        throw ErrorUtils.getProgramFailureException(
-          new ErrorCategory(ErrorCategory.ErrorCategoryEnum.PLUGIN), errorMessage,
-          String.format(errorMessageFormat, ErrorPhase.COMMITTING, errorMessage), ErrorType.SYSTEM, true, e);
+      } catch (GeneralSecurityException gse) {
+        throw new IOException(String.format("Failed to create BigQuery client %s: %s",
+            gse.getClass().getName(), gse.getMessage()), gse);
       }
     }
 
@@ -285,10 +277,8 @@ public void commitJob(JobContext jobContext) throws IOException {
                       writeDisposition, sourceUris, partitionType, timePartitioningType, range, partitionByField,
                       requirePartitionFilter, clusteringOrderList, tableExists, jobLabelKeyValue, conf);
       } catch (Exception e) {
-        String errorMessage = "Failed to import GCS into BigQuery.";
-        throw ErrorUtils.getProgramFailureException(
-          new ErrorCategory(ErrorCategory.ErrorCategoryEnum.PLUGIN), errorMessage,
-          String.format(errorMessageFormat, ErrorPhase.COMMITTING, errorMessage), ErrorType.SYSTEM, true, e);
+        throw new IOException(String.format("Failed to import GCS into BigQuery %s: %s.",
+            e.getClass().getName(), e.getMessage()), e);
       }
 
       cleanup(jobContext);
@@ -597,25 +587,25 @@ private static void waitForJobCompletion(BigQueryHelper bigQueryHelper, String p
               numOfErrors = errors.size();
             }
             // Only add first error message in the exception. For other errors user should look at BigQuery job logs.
-            String errorMessageException = String.format("Error occurred while importing data to BigQuery '%s'." +
+            String errorMessageException = String.format(
+                "Error occurred while importing data to BigQuery '%s'." +
                 " There are total %s error(s) for BigQuery job %s. Please look at " +
                 "BigQuery job logs for more information.",
               errorMessage, numOfErrors, jobReference.getJobId());
             throw ErrorUtils.getProgramFailureException(
               new ErrorCategory(ErrorCategory.ErrorCategoryEnum.PLUGIN), errorMessageException,
-              String.format(errorMessageFormat, ErrorPhase.COMMITTING, errorMessageException), ErrorType.UNKNOWN, true,
-              new IOException(errorMessageException));
-
+              String.format(errorMessageFormat, ErrorPhase.COMMITTING, errorMessageException),
+                ErrorType.UNKNOWN, true, null);
           }
         } else {
           long millisToWait = pollBackOff.nextBackOffMillis();
           if (millisToWait == BackOff.STOP) {
-            String errorMessage = String.format("Job %s failed to complete after %s millis.", jobReference.getJobId()
-              , elapsedTime);
+            String errorMessage = String.format("Job %s failed to complete after %s millis.",
+                jobReference.getJobId(), elapsedTime);
             throw ErrorUtils.getProgramFailureException(
               new ErrorCategory(ErrorCategory.ErrorCategoryEnum.PLUGIN), errorMessage,
-              String.format(errorMessageFormat, ErrorPhase.COMMITTING, errorMessage), ErrorType.UNKNOWN, true,
-              new IOException(errorMessage));
+              String.format(errorMessageFormat, ErrorPhase.COMMITTING, errorMessage),
+                ErrorType.UNKNOWN, true, null);
           }
           // Pause execution for the configured duration before polling job status again.
           Thread.sleep(millisToWait);
@@ -655,7 +645,8 @@ private static Optional<TableSchema> getTableSchema(Configuration conf) throws I
             BigQueryConfiguration.OUTPUT_TABLE_SCHEMA.getKey());
           throw ErrorUtils.getProgramFailureException(
             new ErrorCategory(ErrorCategory.ErrorCategoryEnum.PLUGIN), errorMessage,
-            String.format(errorMessageFormat, ErrorPhase.COMMITTING, errorMessage), ErrorType.SYSTEM, true, e);
+            String.format(errorMessageFormat, ErrorPhase.COMMITTING, errorMessage),
+              ErrorType.SYSTEM, true, e);
         }
       }
       return Optional.empty();