1.王治江-3-FFA2019-深度技术-
加速了对齐时间，增加了快照状态时间，在数据等待处理和持久化之间权衡
Speeds up the alignment time but increases the checkpoint state size during snapshot. Tradeoff betwe en data processingandpersisting
如何配置使用
How to config to use unaligned checkpoint
Benefits
。Checkpoint 更快可预测，尤其在反压场景
Fasterandpredictable checkpoint, especially in back pressure case
Checkpoint间隔更短，频率更快，失败恢复更少的数据
Shorter checkpoint internalandmore frequent checkpoint res ulting in less data to recover during failure
。端到端exactly-once延迟更短
Decreases end-to-end latency in exactly-once case
Limit ations
●Inflight 数据持久化，10瓶颈场景不适合
Not suitable for 10 sensitive scenarios because of persisting infight data
，失败恢复inflight数据，时间变长
More time to recover inflight data during failure
- 2021-06-29
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