Flink batch key points (personal translation)

Event Time / Watermarks #: Based on this scheme , All registered timers will trigger at the end of the time , Ignore user defined WatermarkAssigners or WatermarkGenerators.
Processing Time #: We allow users to request the current processing time and register processing time timers, however , The same time as the event , All timers will trigger at the end of the input .
state: Configured statebackend End will be ignored ,keyed finish shuffle After the operation , Previous state Will be discarded （ I don't know. keyed state or Before operator state Of ）（ The translation may not be right ）
Failure Recovery #： Different from the entire restart of the stream , Intermediate status data can still be used , Just restart the wrong part , Failed restart costs less
checkpoint： No checkpoints , Some features will not work ：CheckpointListener, kafka Of EXACTLY_ONCE , StreamingFileSink’s OnCheckpointRollingPolicy