hi . I am using flink-1.7.0. I am using RockDB and hdfs as statebackend,
but recently I found the following exception when the job resumed from the
checkpoint. Task-local state is always considered a secondary copy, the
ground truth of the checkpoint state is the primary copy in the distributed
store. But it seems that the job did not recover from hdfs, and it failed
directly.Hope someone can give me advices or hints about the problem that I
encountered.
2018-12-06 22:54:04,171 INFO
org.apache.flink.runtime.executiongraph.ExecutionGraph -
KeyedProcess (3/138) (5d96a585130f7a21f22f82f79941fb1d) switched from
RUNNING to FAILED.
java.lang.Exception: Exception while creating StreamOperatorStateContext.
at
org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.streamOperatorStateContext(StreamTaskStateInitializerImpl.java:195)
at
org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:250)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.flink.util.FlinkException: Could not restore
keyed state backend for
KeyedProcessOperator_e528d5d97ea2d7cefbcf6ff5b46354d5_(3/138) from any
of the 1 provided restore options.
at
org.apache.flink.streaming.api.operators.BackendRestorerProcedure.createAndRestore(BackendRestorerProcedure.java:137)
at
org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.keyedStatedBackend(StreamTaskStateInitializerImpl.java:284)
at
org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.streamOperatorStateContext(StreamTaskStateInitializerImpl.java:135)
... 5 more
Caused by: java.nio.file.NoSuchFileException:
/mnt/yarn/local/usercache/yarn/appcache/application_1544101169829_0004/flink-io-0115e9d6-a816-4b65-8944-1423f0fdae58/job_6e40c9381aa12f69b6ac182c91d993f5_op_KeyedProcessOperator_e528d5d97ea2d7cefbcf6ff5b46354d5__3_138__uuid_1c6a5a11-caaf-4564-b3d0-9c7dadddc390/db/000495.sst
->
/mnt/yarn/local/usercache/yarn/appcache/application_1544101169829_0004/flink-io-0115e9d6-a816-4b65-8944-1423f0fdae58/job_6e40c9381aa12f69b6ac182c91d993f5_op_KeyedProcessOperator_e528d5d97ea2d7cefbcf6ff5b46354d5__3_138__uuid_1c6a5a11-caaf-4564-b3d0-9c7dadddc390/5683a26f-cde2-406d-b4cf-3c6c3976f8ba/000495.sst
at
sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at
sun.nio.fs.UnixFileSystemProvider.createLink(UnixFileSystemProvider.java:476)
at java.nio.file.Files.createLink(Files.java:1086)
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBIncrementalRestoreOperation.restoreInstanceDirectoryFromPath(RocksDBKeyedStateBackend.java:1238)
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBIncrementalRestoreOperation.restoreLocalStateIntoFullInstance(RocksDBKeyedStateBackend.java:1186)
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBIncrementalRestoreOperation.restoreWithoutRescaling(RocksDBKeyedStateBackend.java:916)
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBIncrementalRestoreOperation.restore(RocksDBKeyedStateBackend.java:864)
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.restore(RocksDBKeyedStateBackend.java:525)
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.restore(RocksDBKeyedStateBackend.java:147)
at
org.apache.flink.streaming.api.operators.BackendRestorerProcedure.attemptCreateAndRestore(BackendRestorerProcedure.java:151)
at
org.apache.flink.streaming.api.operators.BackendRestorerProcedure.createAndRestore(BackendRestorerProcedure.java:123)
... 7 more
Best
Ben
