| 接口 | 说明 |
|---|---|
| FileFormatFactory |
Factory to create
FileFormat. |
| FormatReaderFactory |
A factory to create
RecordReader for file. |
| FormatWriter |
The writer that writes records.
|
| FormatWriterFactory |
A factory to create
FormatWriter for file. |
| TableStatsExtractor |
Extracts statistics directly from file.
|
| 类 | 说明 |
|---|---|
| FieldStats |
Statistics for each field.
|
| FileFormat |
Factory class which creates reader and writer factories for specific file format.
|
| FileFormatFactory.FormatContext |
the format context.
|
| TableStatsCollector |
Collector to extract statistics of each fields from a series of records.
|
| TableStatsExtractor.FileInfo |
File info fetched from physical file.
|
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