cryptoe commented on a change in pull request #11723:
URL: https://github.com/apache/druid/pull/11723#discussion_r728867499



##########
File path: 
indexing-service/src/main/java/org/apache/druid/indexing/seekablestream/SeekableStreamSamplerSpec.java
##########
@@ -92,9 +93,22 @@ public SamplerResponse sample()
       );
       inputFormat = null;
     } else {
+      RecordSupplier<PartitionIdType, SequenceOffsetType, RecordType> 
recordSupplier;
+
+      try {
+        recordSupplier = createRecordSupplier();
+      }
+      catch (Exception e) {
+        if (e.getCause() != null) {
+          throw new SamplerException(e, "Unable to sample data: %s. Cause: 
%s", e.getMessage(), e.getCause().getMessage());

Review comment:
       Nit: Can we change it to say 'unable to create Record Supplier' as this 
call starts a kakfa/kinessis consumer which can fail due to N reasons. 




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