tree 692821e084aa71619b0f8bfffed8cea1e99fc1e9
parent 949c7444ef98680026d9f2b93d7299b76cdfb030
author david.zanter <David.Zanter@sas.com> 1575490582 -0500
committer Owen O'Malley <omalley@apache.org> 1575650321 -0800
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ORC-574: Use const references for string statistics.

A large portion of cpu in write scenarios is being used in std::string
alloc/delete due to the getMaximum/Minimum returning std:string
copies.  Changing the getMaximum/getMinimum methods to return const
vals will prevent these alloc/copy/deletes from occurring.

This results in about a 30% cpu boost to write.

Fixes #574

Signed-off-by: Owen O'Malley <omalley@apache.org>