Re: State incompatible

Posted by avilevi on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/State-incompatible-tp28748p28764.html

Thanks Haibo, 

bummer ;)

On Mon, Jul 15, 2019 at 12:27 PM Haibo Sun <[hidden email]> wrote:

This Message originated outside your organization.

---

Hi,  Avi Levi

I don't think there's any way to solve this problem right now, and Flink documentation clearly shows that this is not supported. 

“Trying to restore state, which was previously configured without TTL, using TTL enabled descriptor or vice versa will lead to compatibility failure and StateMigrationException."

Flink Document: https://ci.apache.org/projects/flink/flink-docs-release-1.8/dev/stream/state/state.html#state-time-to-live-ttl

Best,

Haibo

At 2019-07-14 16:50:19, "Avi Levi" <[hidden email]> wrote:

Hi,

I added a ttl to my state 

old version :

 private lazy val stateDescriptor = new ValueStateDescriptor("foo", Types.CASE_CLASS[DomainState])

vs the new version 

@transient
private lazy val storeTtl = StateTtlConfig.newBuilder(90)
  .setUpdateType(StateTtlConfig.UpdateType.OnCreateAndWrite)
  .setStateVisibility(StateTtlConfig.StateVisibility.NeverReturnExpired)
  .cleanupInRocksdbCompactFilter()
  .build()

  private lazy val stateDescriptor = {
    val des = new ValueStateDescriptor("foo", Types.CASE_CLASS[DomainState])
    des.enableTimeToLive(storeTtl)
    des
  }

BUT when trying to restore from savepoint I am getting this error:

java.lang.RuntimeException: Error while getting state
	at org.apache.flink.runtime.state.DefaultKeyedStateStore.getState(DefaultKeyedStateStore.java:62)
	at org.apache.flink.streaming.api.operators.StreamingRuntimeContext.getState(StreamingRuntimeContext.java:144)
	...

Caused by: org.apache.flink.util.StateMigrationException: The new state serializer cannot be incompatible.
	at org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.updateRestoredStateMetaInfo(RocksDBKeyedStateBackend.java:527)
	at org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.tryRegisterKvStateInformation(RocksDBKeyedStateBackend.java:475)
	at org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.createInternalState(RocksDBKeyedStateBackend.java:613)
	at org.apache.flink.runtime.state.ttl.TtlStateFactory.createTtlStateContext(TtlStateFactory.java:197)
	at org.apache.flink.runtime.state.ttl.TtlStateFactory.createValueState(TtlStateFactory.java:137)
	at org.apache.flink.runtime.state.ttl.TtlStateFactory.createState(TtlStateFactory.java:126)
	at org.apache.flink.runtime.state.ttl.TtlStateFactory.createStateAndWrapWithTtlIfEnabled(TtlStateFactory.java:71)
	at org.apache.flink.runtime.state.AbstractKeyedStateBackend.getOrCreateKeyedState(AbstractKeyedStateBackend.java:286)
	at org.apache.flink.runtime.state.AbstractKeyedStateBackend.getPartitionedState(AbstractKeyedStateBackend.java:335)
	at org.apache.flink.runtime.state.DefaultKeyedStateStore.getPartitionedState(DefaultKeyedStateStore.java:124)
	at org.apache.flink.runtime.state.DefaultKeyedStateStore.getState(DefaultKeyedStateStore.java:60)
	... 11 more

Do you have any idea how can I resolve it ? 

Best wishes