RequiresFallback (Apache Parquet Column 1.13.1 API)

All Known Implementing Classes:

DictionaryValuesWriter, DictionaryValuesWriter.PlainBinaryDictionaryValuesWriter, DictionaryValuesWriter.PlainDoubleDictionaryValuesWriter, DictionaryValuesWriter.PlainFixedLenArrayDictionaryValuesWriter, DictionaryValuesWriter.PlainFloatDictionaryValuesWriter, DictionaryValuesWriter.PlainIntegerDictionaryValuesWriter, DictionaryValuesWriter.PlainLongDictionaryValuesWriter
```
public interface RequiresFallback
```
Used to add extra behavior to a ValuesWriter that requires fallback

See Also:

FallbackValuesWriter

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`fallBackAllValuesTo(ValuesWriter writer)`	When falling back to a different encoding we must re-encode all the values seen so far
`boolean`	`isCompressionSatisfying(long rawSize, long encodedSize)`	Before writing the first page we will verify if the encoding is worth it.
`boolean`	`shouldFallBack()`	In the case of a dictionary based encoding we will fallback if the dictionary becomes too big

- Method Detail
  - shouldFallBack
```
boolean shouldFallBack()
```
    In the case of a dictionary based encoding we will fallback if the dictionary becomes too big
    
    Returns:
    
    true to notify the parent that we should fallback to another encoding
  - isCompressionSatisfying
```
boolean isCompressionSatisfying(long rawSize,
                                long encodedSize)
```
    Before writing the first page we will verify if the encoding is worth it. and fall back if a simpler encoding would be better in that case
    
    Parameters:
    
    rawSize - the size if encoded with plain
    
    encodedSize - the size as encoded by the current encoding
    
    Returns:
    
    true if we keep this encoding
  - fallBackAllValuesTo
```
void fallBackAllValuesTo(ValuesWriter writer)
```
    When falling back to a different encoding we must re-encode all the values seen so far
    
    Parameters:
    
    writer - the new encoder to write the current values to