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https://issues.apache.org/jira/browse/FLINK-20489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17245468#comment-17245468
]
Arvid Heise commented on FLINK-20489:
-------------------------------------
Let's first collect general information in
https://issues.apache.org/jira/browse/FLINK-20376 and then look into the
version specific issues.
> Error in restoring checkpoint/savepoint when Flink is upgraded from 1.9 to
> 1.10.2
> ---------------------------------------------------------------------------------
>
> Key: FLINK-20489
> URL: https://issues.apache.org/jira/browse/FLINK-20489
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Reporter: Partha Pradeep Mishra
> Priority: Major
>
> 1) Trying to restore saved savepoint of Flink 1.9 in version 1.10.2 resulted
> in the below error.
> _Could not restore keyed state backend for
> WindowOperator_306d8342cb5b2ad8b53f1be57f65bee8_(1/4) from any of the 1
> provided restore options._
>
> *Complete Stack Trace :*
> 2020-12-04 15:17:21 java.lang.Exception: Exception while creating
> StreamOperatorStateContext. at
> org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.streamOperatorStateContext(StreamTaskStateInitializerImpl.java:191)
> at
> org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:255)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.initializeStateAndOpen(StreamTask.java:989)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$beforeInvoke$0(StreamTask.java:453)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:94)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:448)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:460)
> at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:708) at
> org.apache.flink.runtime.taskmanager.Task.run(Task.java:533) at
> java.lang.Thread.run(Thread.java:748) Caused by:
> org.apache.flink.util.FlinkException: Could not restore keyed state backend
> for WindowOperator_306d8342cb5b2ad8b53f1be57f65bee8_(1/4) from any of the 1
> provided restore options. at
> org.apache.flink.streaming.api.operators.BackendRestorerProcedure.createAndRestore(BackendRestorerProcedure.java:135)
> at
> org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.keyedStatedBackend(StreamTaskStateInitializerImpl.java:304)
> at
> org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.streamOperatorStateContext(StreamTaskStateInitializerImpl.java:131)
> ... 9 more Caused by:
> org.apache.flink.runtime.state.BackendBuildingException: Failed when trying
> to restore heap backend at
> org.apache.flink.runtime.state.heap.HeapKeyedStateBackendBuilder.build(HeapKeyedStateBackendBuilder.java:116)
> at
> org.apache.flink.runtime.state.filesystem.FsStateBackend.createKeyedStateBackend(FsStateBackend.java:529)
> at
> org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.lambda$keyedStatedBackend$1(StreamTaskStateInitializerImpl.java:288)
> at
> org.apache.flink.streaming.api.operators.BackendRestorerProcedure.attemptCreateAndRestore(BackendRestorerProcedure.java:142)
> at
> org.apache.flink.streaming.api.operators.BackendRestorerProcedure.createAndRestore(BackendRestorerProcedure.java:121)
> ... 11 more Caused by: java.lang.IllegalStateException: Unexpected key-group
> in restore. at
> org.apache.flink.util.Preconditions.checkState(Preconditions.java:195) at
> org.apache.flink.runtime.state.heap.HeapRestoreOperation.readStateHandleStateData(HeapRestoreOperation.java:248)
> at
> org.apache.flink.runtime.state.heap.HeapRestoreOperation.restore(HeapRestoreOperation.java:154)
> at
> org.apache.flink.runtime.state.heap.HeapKeyedStateBackendBuilder.build(HeapKeyedStateBa
> ckendBuilder.java:114) ... 15 more
>
> Earlier tried restoring the 1.9 savepoint in 1.11.2 and it was failure with
> the error specified in the Bug ID. That bug is still in unresolved state.
> https://issues.apache.org/jira/browse/FLINK-20376
>
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