[jira] [Updated] (FLINK-19016) Checksum mismatch when restore from RocksDB

["Arvid Heise (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-19016?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arvid Heise updated FLINK-19016:
--------------------------------
    Component/s:     (was: Runtime / Checkpointing)
                 Runtime / State Backends

> Checksum mismatch when restore from RocksDB
> -------------------------------------------
>
>                 Key: FLINK-19016
>                 URL: https://issues.apache.org/jira/browse/FLINK-19016
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / State Backends
>    Affects Versions: 1.11.1
>            Reporter: Jiayi Liao
>            Priority: Major
>
> The error stack is shown below:
> {code:java}
> Caused by: org.apache.flink.util.FlinkException: Could not restore keyed state backend for KeyedMapBundleOperator_44cfc1ca74b40bb44eed1f38f72b3ea9_(71/300) 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:307)
>         at org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.streamOperatorStateContext(StreamTaskStateInitializerImpl.java:135)
>         ... 6 more
> Caused by: org.apache.flink.runtime.state.BackendBuildingException: Caught unexpected exception.
>         at org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackendBuilder.build(RocksDBKeyedStateBackendBuilder.java:333)
>         at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.createKeyedStateBackend(RocksDBStateBackend.java:580)
>         at org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl.lambda$keyedStatedBackend$1(StreamTaskStateInitializerImpl.java:291)
>         at org.apache.flink.streaming.api.operators.BackendRestorerProcedure.attemptCreateAndRestore(BackendRestorerProcedure.java:142)
>         at org.apache.flink.streaming.api.operators.BackendRestorerProcedure.createAndRestore(BackendRestorerProcedure.java:121)
>         ... 8 more
> Caused by: java.io.IOException: Error while opening RocksDB instance.
>         at org.apache.flink.contrib.streaming.state.RocksDBOperationUtils.openDB(RocksDBOperationUtils.java:74)
>         at org.apache.flink.contrib.streaming.state.restore.AbstractRocksDBRestoreOperation.openDB(AbstractRocksDBRestoreOperation.java:131)
>         at org.apache.flink.contrib.streaming.state.restore.RocksDBIncrementalRestoreOperation.restoreFromLocalState(RocksDBIncrementalRestoreOperation.java:214)
>         at org.apache.flink.contrib.streaming.state.restore.RocksDBIncrementalRestoreOperation.restoreFromRemoteState(RocksDBIncrementalRestoreOperation.java:188)
>         at org.apache.flink.contrib.streaming.state.restore.RocksDBIncrementalRestoreOperation.restoreWithoutRescaling(RocksDBIncrementalRestoreOperation.java:162)
>         at org.apache.flink.contrib.streaming.state.restore.RocksDBIncrementalRestoreOperation.restore(RocksDBIncrementalRestoreOperation.java:148)
>         at org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackendBuilder.build(RocksDBKeyedStateBackendBuilder.java:277)
>         ... 12 more
> Caused by: org.rocksdb.RocksDBException: checksum mismatch
>         at org.rocksdb.RocksDB.open(Native Method)
>         at org.rocksdb.RocksDB.open(RocksDB.java:286)
>         at org.apache.flink.contrib.streaming.state.RocksDBOperationUtils.openDB(RocksDBOperationUtils.java:66)
>         ... 18 more
> {code}
> The machine goes down because of hardware problem, then the job cannot restart successfully anymore. After digging a little bit, I found that RocksDB in Flink uses sync instead of fsync to synchronized the data with the disk. With sync operation, the RocksDB cannot guarantee that the current in-progress file can be persisted on disk in takeDBNativeCheckpoint.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)