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" <avi.l...@bluevoyant.com> 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
