Github user omalley commented on the issue:
https://github.com/apache/orc/pull/87
Ok, I took a pass at this:
https://github.com/omalley/orc/tree/orc-135
Changes:
* Block all use of PPD on timestamps from before ORC-135.
* Block PPD on timestamp with numeric constraints
* TimestampColumnStatistics.getMinimum and getMaximum return Timestamps in
the local timezone.
* Loading old TimestampColumnStatistics loads the min and max assuming
local timezone.
* Add utilities to SerializationUtils for conversion to and from utc.
* Make BloomFilter.encoding an int so that we can detect future values.
* Future BloomFilter encodings are not used.
* Some more test cases
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