in analytics-kotlin/src/main/kotlin/services/timestream/TimestreamSink.kt [130:136]
override fun initializeState(functionInitializationContext: FunctionInitializationContext) {
val descriptor = ListStateDescriptor("recordList", Record::class.java)
checkPointedState = functionInitializationContext.operatorStateStore.getListState(descriptor)
if (functionInitializationContext.isRestored) {
bufferedRecords.addAll(checkPointedState.get())
}
}