Parquet
2018-12-11 11:09:19 1 举报Parquet数据结构示意图
作者其他创作
大纲/内容
values
Footer length(4 bytes)
Page 0
Magic Number(4 bytes): \"PAR1\"
Column b meta data- type/path/encoding/codec- num values- offset of first data page- offset of first index page- compressed/uncompressed size- extra key/value pairs
Magic Number(4 bytes)：\"PAR1\"
Repetition levels
Definition levels
Column a meta data- type/path/encoding/codec- num values- offset of first data page- offset of first index page- compressed/uncompressed size- extra key/value pairs
Row group 0
Parquet File
Column c meta data
Column b
Row group 1
Page header(ThriftCompactProtocol)
Page 1
Footer
Column a
- Version- Schema- extra key/value paris
FileMetaData(ThriftCompactProtocol)
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