trait CheckpointProvider extends UninitializedCheckpointProvider
A trait which provides information about a checkpoint to the Snapshot.
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abstract
def
allActionsFileIndexes(): Seq[DeltaLogFileIndex]
List of different file indexes which could help derive full state-reconstruction for the checkpoint.
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abstract
def
checkpointPolicy: Option[Policy]
The type of checkpoint (V2 vs Classic).
The type of checkpoint (V2 vs Classic). This will be None when no checkpoint is available. This is only intended to be used for logging and metrics.
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abstract
def
effectiveCheckpointSizeInBytes(): Long
Effective size of checkpoint across all files
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abstract
def
topLevelFileIndex: Option[DeltaLogFileIndex]
File index which could help derive actions stored in top level files for the checkpoint.
File index which could help derive actions stored in top level files for the checkpoint. This could be used to get Protocol, Metadata etc from a checkpoint. This could also be used if we want to shallow copy a checkpoint.
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abstract
def
topLevelFiles: Seq[FileStatus]
Top level files that represents this checkpoint.
Top level files that represents this checkpoint. These files could be reused again to initialize the CheckpointProvider.
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abstract
def
version: Long
Checkpoint version
Checkpoint version
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def
isEmpty: Boolean
True if the checkpoint provider is empty (does not refer to a valid checkpoint)
True if the checkpoint provider is empty (does not refer to a valid checkpoint)
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