c
org.apache.spark.sql.execution.streaming.state
StateSchemaMetadata
Companion object StateSchemaMetadata
case class StateSchemaMetadata(activeSchemas: Map[StateSchemaMetadataKey, StateSchemaMetadataValue]) extends Product with Serializable
Contains schema evolution metadata for a stateful operator.
- activeSchemas
Map of all active schema versions, keyed by column family and schema ID. This includes both the current schema and any previous schemas that may still exist in the state store.
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- new StateSchemaMetadata(activeSchemas: Map[StateSchemaMetadataKey, StateSchemaMetadataValue])
- activeSchemas
Map of all active schema versions, keyed by column family and schema ID. This includes both the current schema and any previous schemas that may still exist in the state store.
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- val activeSchemas: Map[StateSchemaMetadataKey, StateSchemaMetadataValue]
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(Since version 9)