| commit | 6259ebbafcef243c7812536dc2d5912accb0cda4 | [log] [tgz] |
|---|---|---|
| author | Gang Wu <ustcwg@gmail.com> | Mon Feb 20 23:28:23 2023 -0800 |
| committer | Dongjoon Hyun <dongjoon@apache.org> | Mon Feb 20 23:28:23 2023 -0800 |
| tree | afc2c1c76a3e47b2f4f9bdba36b12c65e37d5b6c | |
| parent | 7f90bbd65c1c45f3bf737f776ab1e52c3dc798b9 [diff] |
ORC-1377: [C++] Enforce override keyword ### What changes were proposed in this pull request? Enforce adding `override` keyword to virtual functions. ### Why are the changes needed? A lot of warnings are related to missing override keyword in the Github Actions. ### How was this patch tested? Make sure all tests pass. Closes #1420 from wgtmac/ORC-1377. Authored-by: Gang Wu <ustcwg@gmail.com> Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>
ORC is a self-describing type-aware columnar file format designed for Hadoop workloads. It is optimized for large streaming reads, but with integrated support for finding required rows quickly. Storing data in a columnar format lets the reader read, decompress, and process only the values that are required for the current query. Because ORC files are type-aware, the writer chooses the most appropriate encoding for the type and builds an internal index as the file is written. Predicate pushdown uses those indexes to determine which stripes in a file need to be read for a particular query and the row indexes can narrow the search to a particular set of 10,000 rows. ORC supports the complete set of types in Hive, including the complex types: structs, lists, maps, and unions.
This project includes both a Java library and a C++ library for reading and writing the Optimized Row Columnar (ORC) file format. The C++ and Java libraries are completely independent of each other and will each read all versions of ORC files.
Releases:
The current build status:
Bug tracking: Apache Jira
The subdirectories are:
To build a release version with debug information:
% mkdir build % cd build % cmake .. % make package % make test-out
To build a debug version:
% mkdir build % cd build % cmake .. -DCMAKE_BUILD_TYPE=DEBUG % make package % make test-out
To build a release version without debug information:
% mkdir build % cd build % cmake .. -DCMAKE_BUILD_TYPE=RELEASE % make package % make test-out
To build only the Java library:
% cd java % ./mvnw package
To build only the C++ library:
% mkdir build % cd build % cmake .. -DBUILD_JAVA=OFF % make package % make test-out