Chunyang Wen commented on ORC-40:

Most of the APIs have been implemented using C++. But in order to reduce memory 
leak problem, I use std::shared_ptr which is supported in C++11.

Whether C++ sources will only be compiled in compilers which support at C++11 
(with option -std=c++11)?

If so, I will use std::shared_ptr, otherwise I am considering boost::shared_ptr 
from boost (Actually I think shared_ptr comes from tr1 which originates from 

> C++ Reader does not support predicate pushdown.
> -----------------------------------------------
>                 Key: ORC-40
>                 URL: https://issues.apache.org/jira/browse/ORC-40
>             Project: Orc
>          Issue Type: New Feature
>          Components: C++
>            Reporter: Owen O'Malley
> The Java reader can push down predicates to filter the data being read. The 
> C++ reader doesn't do that yet.

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