c
org.apache.spark.sql.execution.streaming.state
StateSchemaCompatibilityChecker
Companion object StateSchemaCompatibilityChecker
class StateSchemaCompatibilityChecker extends Logging
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- new StateSchemaCompatibilityChecker(providerId: StateStoreProviderId, hadoopConf: Configuration, oldSchemaFilePaths: List[Path] = List.empty, newSchemaFilePath: Option[Path] = None)
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- def readSchemaFile(): List[StateStoreColFamilySchema]
- def readSchemaFiles(): Map[String, List[StateStoreColFamilySchema]]
- final def synchronized[T0](arg0: => T0): T0
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- def toString(): String
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- def validateAndMaybeEvolveStateSchema(newStateSchema: List[StateStoreColFamilySchema], ignoreValueSchema: Boolean, stateSchemaVersion: Int, schemaEvolutionEnabled: Boolean): Boolean
Function to validate the new state store schema and evolve the schema if required.
Function to validate the new state store schema and evolve the schema if required.
- newStateSchema
- proposed new state store schema by the operator
- ignoreValueSchema
- whether to ignore value schema compatibility checks or not
- stateSchemaVersion
- version of the state schema to be used
- returns
- true if the schema has evolved, false otherwise
- final def wait(arg0: Long, arg1: Int): Unit
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- Deprecated
(Since version 9)