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velox | optimizing query engines and data processing systems

 by   facebookincubator C++ Version: Current License: Apache-2.0

 by   facebookincubator C++ Version: Current License: Apache-2.0

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kandi X-RAY | velox Summary

velox is a C++ library. velox has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.
Velox is a C++ database acceleration library which provides reusable, extensible, and high-performance data processing components. These components can be reused to build compute engines focused on different analytical workloads, including batch, interactive, stream processing, and AI/ML. Velox was created by Facebook and it is currently developed in partnership with Intel, ByteDance, and Ahana. In common usage scenarios, Velox takes a fully optimized query plan as input and performs the described computation. Considering Velox does not provide a SQL parser, a dataframe layer, or a query optimizer, it is usually not meant to be used directly by end-users; rather, it is mostly used by developers integrating and optimizing their compute engines.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • velox has a low active ecosystem.
  • It has 699 star(s) with 203 fork(s). There are 67 watchers for this library.
  • It had no major release in the last 12 months.
  • There are 43 open issues and 50 have been closed. On average issues are closed in 17 days. There are 50 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of velox is current.
velox Support
Best in #C++
Average in #C++
velox Support
Best in #C++
Average in #C++

quality kandi Quality

  • velox has no bugs reported.
velox Quality
Best in #C++
Average in #C++
velox Quality
Best in #C++
Average in #C++

securitySecurity

  • velox has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
velox Security
Best in #C++
Average in #C++
velox Security
Best in #C++
Average in #C++

license License

  • velox is licensed under the Apache-2.0 License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
velox License
Best in #C++
Average in #C++
velox License
Best in #C++
Average in #C++

buildReuse

  • velox releases are not available. You will need to build from source code and install.
  • Installation instructions are available. Examples and code snippets are not available.
velox Reuse
Best in #C++
Average in #C++
velox Reuse
Best in #C++
Average in #C++
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velox Key Features

Type: a generic typing system that supports scalar, complex, and nested types, such as structs, maps, arrays, tensors, etc.

Vector: an Arrow-compatible columnar memory layout module, which provides multiple encodings, such as Flat, Dictionary, Constant, Sequence/RLE, and Bias, in addition to a lazy materialization pattern and support for out-of-order writes.

Expression Eval: a fully vectorized expression evaluation engine that allows expressions to be efficiently executed on top of Vector/Arrow encoded data.

Function Packages: sets of vectorized function implementations following the Presto and Spark semantic.

Operators: implementation of common data processing operators such as scans, projection, filtering, groupBy, orderBy, shuffle, hash join, unnest, and more.

I/O: a generic connector interface that allows different file formats (ORC/DWRF and Parquet) and storage adapters (S3, HDFS, local files) to be used.

Network Serializers: an interface where different wire protocols can be implemented, used for network communication, supporting PrestoPage and Spark's UnsafeRow.

Resource Management: a collection of primitives for handling computational resources, such as memory arenas and buffer management, tasks, drivers, and thread pools for CPU and thread execution, spilling, and caching.

Custom types

Simple and vectorized functions

Aggregate functions

Operators

File formats

Storage adapters

Network serializers

Community Discussions

No Community Discussions are available at this moment for velox.Refer to stack overflow page for discussions.

No Community Discussions are available at this moment for velox.Refer to stack overflow page for discussions.

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install velox

We provide scripts to help developers setup and install Velox dependencies.

Support

Developer guides detailing many aspects of the library, in addition to the list of available functions can be found here.

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