Github user chenghao-intel commented on the pull request: https://github.com/apache/spark/pull/8409#issuecomment-134487838 I think the maximum scale we can support should be 18, not 38. As you can see that in `SYSTEM_DEFAULT`, isn't it? I am not sure if that's the original design, but seems Hive doesn't support the scale as big as 38.
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