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Overview

Apache CarbonData 是一种在大数据平台上用于快速分析的带索引的列式存储数据格式。

Feature

  • 列式存储
  • 多级索引:BTree、MinMax
  • 字典编码
  • 下推优化:File、Blocklet
  • DDL、DML、Update、Delete
  • Partition:column、hash,list,range
  • DataMaps:Pre-Aggregate、Time Series、Bloom filter、Lucene、MV (Materialized Views)
  • 深度集成Spark,支持Hive、Presto
  • Storage:S3、HDFS、Alluxio

File Structure

Directory

File Directory

Schema

File Schema

Format

  • Header
  • Blocklet
  • Footer

Other

  • Index
  • Dictionary
  • Table Status

Reference

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