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Checkpoint and State, State - Coggle Diagram
Checkpoint and State
Barrier Snapshotting
tunning prop
stored in hdfs
Sync
Asyn
State managed
State backend support aync
Memory
FS
Rock DB
Increasemental snapshot
Sync Snapshot
Disadv
Slow job processing
Consume disk space
Therefore, store the snapshot only for Delta
State
Managed State - Controlled by Flink
Adv
Better memory optimization
Managed KeyState
Value state - Single value
List State - Multiple values
add method
Reducing State operation
Managed Operator state
Even split redistribution
Union redistribution
Keyed State
Raw State - Controlled by operator/developer
Use open to open the corresponding state