tree ddf3e47fa064d884cb07a183f1dd84a77b67b75c
parent e7db0654f895fbe0ba45ca925ef4380f48c93b2d
author Deepak Majeti <deepak.majeti@hpe.com> 1519496603 +0100
committer Uwe L. Korn <uwe@apache.org> 1519496603 +0100

PARQUET-1225: NaN values may lead to incorrect filtering under certai…

1) `parquet-cpp` does not implement filtering (predicate pushdown). Clients such as Vertica, read the statistics from the metadata and implement their own filtering based on these stats.
Therefore, the read path does not require any changes. We should document that the min/max value can potentially contain NaNs.

2) I made changes to the write path to ignore the NaNs.

Author: Deepak Majeti <deepak.majeti@hpe.com>

Closes #444 from majetideepak/PARQUET-1225 and squashes the following commits:

c29ede2 [Deepak Majeti] refactor code
c02adb2 [Deepak Majeti] fix compiler error
1c229e2 [Deepak Majeti] fix logic for UpdateSpaced
baf6f50 [Deepak Majeti] change api from NotNaN to IsNaN
3144a6a [Deepak Majeti] clang format
ba44611 [Deepak Majeti] review comments and add tests
63e889b [Deepak Majeti] PARQUET-1225: NaN values may lead to incorrect filtering under certain circumstances