[GitHub] [drill] vvysotskyi commented on a change in pull request #2319: DRILL-8002: Expose clear error message for the case of errors from ElasticSearch

[GitBox <gi...@apache.org>]

vvysotskyi commented on a change in pull request #2319:
URL: https://github.com/apache/drill/pull/2319#discussion_r712734837



##########
File path: exec/java-exec/src/main/java/org/apache/drill/exec/store/enumerable/EnumerableRecordReader.java
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@@ -99,7 +103,9 @@ private void setup(OperatorContext context) {
             .iterator();
       }
     } catch (CompileException | IOException | ClassTransformationException | ReflectiveOperationException e) {
-      throw new RuntimeException("Exception happened when executing generated code", e.getCause());
+      logger.error("Exception happened when executing generated code", e);
+      Throwable rootCause = Throwables.getRootCause(e);
+      throw new DrillRuntimeException(rootCause.getMessage(), rootCause);

Review comment:
       Before:
   ```
   EXECUTION_ERROR ERROR: Exception happened when executing generated code
   ```
   And now it prints actual reason, for example for the unit test I added it will be the following:
   ```
   EXECUTION_ERROR ERROR: Field full_name123 not defined for employee
   ```




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