[英]Flink State Schema Migration
我在使用MemoryStateBackend的独立群集上有一个flink流应用程序。 Kryo的TaggedFieldSerializer被用作默认的序列化程序。
当我更改状态的架构并重新部署应用程序时,出现以下异常
Caused by: org.apache.flink.util.StateMigrationException: State migration isn't supported, yet.
at org.apache.flink.runtime.state.heap.HeapKeyedStateBackend.tryRegisterStateTable(HeapKeyedStateBackend.java:209)
at org.apache.flink.runtime.state.heap.HeapKeyedStateBackend.tryRegisterStateTable(HeapKeyedStateBackend.java:142)
at org.apache.flink.runtime.state.heap.HeapKeyedStateBackend.createValueState(HeapKeyedStateBackend.java:234)
at org.apache.flink.runtime.state.AbstractKeyedStateBackend$1.createValueState(AbstractKeyedStateBackend.java:315)
at org.apache.flink.api.common.state.ValueStateDescriptor.bind(ValueStateDescriptor.java:128)
at org.apache.flink.api.common.state.ValueStateDescriptor.bind(ValueStateDescriptor.java:35)
at org.apache.flink.runtime.state.AbstractKeyedStateBackend.getOrCreateKeyedState(AbstractKeyedStateBackend.java:312)
at org.apache.flink.runtime.state.AbstractKeyedStateBackend.getPartitionedState(AbstractKeyedStateBackend.java:392)
at org.apache.flink.runtime.state.DefaultKeyedStateStore.getPartitionedState(DefaultKeyedStateStore.java:124)
at org.apache.flink.runtime.state.DefaultKeyedStateStore.getState(DefaultKeyedStateStore.java:60)
如果有人为我提供解决方法,或者我应该使用FsStateBackend解决此问题,这将非常有用。
PS:如果我想在独立群集上运行的flink应用程序上使用S3上的FsStateBackend,则必须进行哪些配置更改。
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