Laszlo Bodor created HIVE-19131:
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Summary: DecimalColumnStatsMergerTest comparison review
Key: HIVE-19131
URL: https://issues.apache.org/jira/browse/HIVE-19131
Project: Hive
Issue Type: Bug
Reporter: Laszlo Bodor
DecimalColumnStatsMergerTest has a strange comparison logic, which needs to be
reviewed.
Regarding low and high values, it uses compareTo with the same direction, which
seems to be incorrect.
{code}
Decimal lowValue = aggregateData.getLowValue() != null &&
(aggregateData.getLowValue().compareTo(newData.getLowValue()) > 0) ?
aggregateData .getLowValue() : newData.getLowValue();
aggregateData.setLowValue(lowValue); Decimal highValue =
aggregateData.getHighValue() != null &&
(aggregateData.getHighValue().compareTo(newData.getHighValue()) > 0) ?
aggregateData .getHighValue() : newData.getHighValue();
{code}
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