Metrics
0
Watch 14 Star 20 Fork 8

CarbonData / Apache CarbonDataJavaApache-2.0

Sign up for free
Explore and code with more than 2 million developers,Free private repositories !:)
Sign up
Apache® CarbonData™是由华为开源贡献的大数据高效存储格式解决方案。 spread retract

https://carbondata.apache.org

  • Scala 60.1%
  • Java 39.1%
  • C++ 0.5%
  • Thrift 0.1%
  • Python 0.1%
  • Other 0.1%
Clone or download
Cancel
Notice: Creating folder will generate an empty file .keep, because not support in Git
Loading...
README.md

Apache CarbonData is an indexed columnar data store solution for fast analytics on big data platform, e.g.Apache Hadoop, Apache Spark, etc.

You can find the latest CarbonData document and learn more at: http://carbondata.apache.org

CarbonData cwiki

Visit count: HitCount

Status

Spark2.2: Build Status Coverage Status Coverity Scan Build Status

Features

CarbonData file format is a columnar store in HDFS, it has many features that a modern columnar format has, such as splittable, compression schema ,complex data type etc, and CarbonData has following unique features:

  • Stores data along with index: it can significantly accelerate query performance and reduces the I/O scans and CPU resources, where there are filters in the query. CarbonData index consists of multiple level of indices, a processing framework can leverage this index to reduce the task it needs to schedule and process, and it can also do skip scan in more finer grain unit (called blocklet) in task side scanning instead of scanning the whole file.
  • Operable encoded data :Through supporting efficient compression and global encoding schemes, can query on compressed/encoded data, the data can be converted just before returning the results to the users, which is "late materialized".
  • Supports for various use cases with one single Data format : like interactive OLAP-style query, Sequential Access (big scan), Random Access (narrow scan).

Building CarbonData

CarbonData is built using Apache Maven, to build CarbonData

Online Documentation

Integration

Other Technical Material

Fork and Contribute

This is an active open source project for everyone, and we are always open to people who want to use this system or contribute to it. This guide document introduce how to contribute to CarbonData.

Contact us

To get involved in CarbonData:

About

Apache CarbonData is an open source project of The Apache Software Foundation (ASF).

Comments ( 1 )

You need to Sign in for post a comment

Help Search

183227_9af5e6a8_1826025 111910_4d91f001_1826025