Update Job creation mode if not explicitly set

Author: logachev

google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/BigQueryImpl.java

@@ -40,6 +40,7 @@
 import com.google.cloud.Tuple;
 import com.google.cloud.bigquery.BigQueryRetryHelper.BigQueryRetryHelperException;
 import com.google.cloud.bigquery.InsertAllRequest.RowToInsert;
+import com.google.cloud.bigquery.QueryJobConfiguration.JobCreationMode;
 import com.google.cloud.bigquery.spi.v2.BigQueryRpc;
 import com.google.cloud.bigquery.spi.v2.HttpBigQueryRpc;
 import com.google.common.annotations.VisibleForTesting;
@@ -2045,6 +2046,14 @@ public Object queryWithTimeout(
  throws InterruptedException, JobException {
  Job.checkNotDryRun(configuration, "query");
 
+ // If JobCreationMode is not explicitly set, update it with default value;
+ if (configuration.getJobCreationMode() == null){
+ configuration =
+ configuration.toBuilder()
+ .setJobCreationMode(getOptions().getDefaultJobCreationMode())
+ .build();
+ }
+
  Span querySpan = null;
  if (getOptions().isOpenTelemetryTracingEnabled()
  && getOptions().getOpenTelemetryTracer() != null) {