Github user mallman commented on a diff in the pull request: https://github.com/apache/spark/pull/21320#discussion_r212396370 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetRowConverter.scala --- @@ -202,11 +204,15 @@ private[parquet] class ParquetRowConverter( override def start(): Unit = { var i = 0 - while (i < currentRow.numFields) { + while (i < fieldConverters.length) { fieldConverters(i).updater.start() currentRow.setNullAt(i) i += 1 } + while (i < currentRow.numFields) { --- End diff -- These changes are related to my fix for the ignored unit test. If I apply my fix but keep the master version of this file, 24 unit tests fail. If I apply my fix along with this file diff then all tests pass, including the test that is currently ignored. I'm not sure I can develop a unit test for this current commit that should pass but will fail without this file's changes. I haven't spent any time thinking about it, and I really need to work on other things right now. If you want I will back out this change. However, I will re-incorporate it in a follow-on PR. Thanks.
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