class ContinuousSourceSnapshotSupplier extends SnapshotSupplier
An implementation of SnapshotSupplier for {#link
org.apache.flink.api.connector.source.Boundedness#CONTINUOUS_UNBOUNDED}
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- new ContinuousSourceSnapshotSupplier(deltaLog: DeltaLog)
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def
getHeadSnapshot(): TransitiveOptional[Snapshot]
A helper method that returns the latest
Snapshotat moment when this method was called.A helper method that returns the latest
Snapshotat moment when this method was called.If underlying Delta table, represented by
#deltaLogfield is changing, for example a new data is being added to the table, every call to this method can return differentSnapshot.- Attributes
- protected[supplier]
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- SnapshotSupplier
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def
getSnapshot(sourceConfiguration: DeltaConnectorConfiguration): Snapshot
This method returns a
Snapshotinstance acquired from#deltaLog.This method returns a
Snapshotinstance acquired from#deltaLog. This implementation tries to query theSnapshotin below order, stopping at first non-empty result:- If
DeltaSourceOptions#STARTING_VERSIONwas specified, use it to callDeltaLog#getSnapshotForVersionAsOf(long). - If
DeltaSourceOptions#STARTING_TIMESTAMPwas specified, use it to callDeltaLog#getSnapshotForTimestampAsOf(long). - Get the head version using
DeltaLog#snapshot()
- returns
A
Snapshotinstance or throwsjava.util.NoSuchElementExceptionif no snapshot was found.
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