class StatePartitionReaderFactory extends PartitionReaderFactory
An implementation of PartitionReaderFactory for State data source. This is used to support general read from a state store instance, rather than specific to the operator.
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- new StatePartitionReaderFactory(storeConf: StateStoreConf, hadoopConf: SerializableConfiguration, schema: StructType, keyStateEncoderSpec: KeyStateEncoderSpec, stateVariableInfoOpt: Option[TransformWithStateVariableInfo], stateStoreColFamilySchemaOpt: Option[StateStoreColFamilySchema], stateSchemaProviderOpt: Option[StateSchemaProvider])
- stateSchemaProviderOpt
Optional provider that maintains mapping between schema IDs and their corresponding schemas, enabling reading of state data written with older schema versions
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- def createColumnarReader(arg0: InputPartition): PartitionReader[ColumnarBatch]
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- PartitionReaderFactory
- def createReader(partition: InputPartition): PartitionReader[InternalRow]
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- def supportColumnarReads(arg0: InputPartition): Boolean
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- PartitionReaderFactory
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(Since version 9)