Hello,
Every once in a while our checkpoints fail with the following exception:
/AsynchronousException{java.lang.Exception: Could not materialize checkpoint
65912 for operator AGGREGATION-FILTER (2/2).}
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointExceptionHandler.tryHandleCheckpointException(StreamTask.java:1153)
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.handleExecutionException(StreamTask.java:947)
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:884)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.Exception: Could not materialize checkpoint 65912 for
operator AGGREGATION-FILTER (2/2).
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.handleExecutionException(StreamTask.java:942)
... 6 more
Caused by: java.util.concurrent.ExecutionException: java.io.IOException:
Could not flush and close the file system output stream to
hdfs:/flink/data/checkpoints/76f7b4f5c679e8f2d822c9c3c73faf5d/chk-65912/68776faf-b687-403b-ba0c-17419f8684dc
in order to obtain the stream state handle
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at
org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:53)
at
org.apache.flink.streaming.api.operators.OperatorSnapshotFinalizer.<init>(OperatorSnapshotFinalizer.java:53)
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:853)
... 5 more
Caused by: java.io.IOException: Could not flush and close the file system
output stream to
hdfs:/flink/data/checkpoints/76f7b4f5c679e8f2d822c9c3c73faf5d/chk-65912/68776faf-b687-403b-ba0c-17419f8684dc
in order to obtain the stream state handle
at
org.apache.flink.runtime.state.filesystem.FsCheckpointStreamFactory$FsCheckpointStateOutputStream.closeAndGetHandle(FsCheckpointStreamFactory.java:328)
at
org.apache.flink.runtime.state.DefaultOperatorStateBackend$1.performOperation(DefaultOperatorStateBackend.java:454)
at
org.apache.flink.runtime.state.DefaultOperatorStateBackend$1.performOperation(DefaultOperatorStateBackend.java:359)
at
org.apache.flink.runtime.io.async.AbstractAsyncCallableWithResources.call(AbstractAsyncCallableWithResources.java:75)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:50)
... 7 more
Caused by:
org.apache.hadoop.ipc.RemoteException(java.io.FileNotFoundException): File
does not exist:
/flink/data/checkpoints/76f7b4f5c679e8f2d822c9c3c73faf5d/chk-65912/68776faf-b687-403b-ba0c-17419f8684dc
(inode 181723246) Holder DFSClient_NONMAPREDUCE_-10072319_1 does not have
any open files.
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2668)
at
org.apache.hadoop.hdfs.server.namenode.FSDirWriteFileOp.completeFileInternal(FSDirWriteFileOp.java:621)
at
org.apache.hadoop.hdfs.server.namenode.FSDirWriteFileOp.completeFile(FSDirWriteFileOp.java:601)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFile(FSNamesystem.java:2713)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.complete(NameNodeRpcServer.java:882)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.complete(ClientNamenodeProtocolServerSideTranslatorPB.java:555)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:447)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:847)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:790)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1836)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2486)
at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1489)
at org.apache.hadoop.ipc.Client.call(Client.java:1435)
at org.apache.hadoop.ipc.Client.call(Client.java:1345)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:227)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
at com.sun.proxy.$Proxy12.complete(Unknown Source)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.complete(ClientNamenodeProtocolTranslatorPB.java:484)
at sun.reflect.GeneratedMethodAccessor143.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:409)
at
org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:163)
at
org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:155)
at
org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:346)
at com.sun.proxy.$Proxy13.complete(Unknown Source)
at
org.apache.hadoop.hdfs.DFSOutputStream.completeFile(DFSOutputStream.java:861)
at
org.apache.hadoop.hdfs.DFSOutputStream.closeImpl(DFSOutputStream.java:839)
at
org.apache.hadoop.hdfs.DFSOutputStream.close(DFSOutputStream.java:805)
at
org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:72)
at
org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:106)
at
org.apache.flink.runtime.fs.hdfs.HadoopDataOutputStream.close(HadoopDataOutputStream.java:52)
at
org.apache.flink.core.fs.ClosingFSDataOutputStream.close(ClosingFSDataOutputStream.java:64)
at
org.apache.flink.runtime.state.filesystem.FsCheckpointStreamFactory$FsCheckpointStateOutputStream.closeAndGetHandle(FsCheckpointStreamFactory.java:314)
... 12 more/
What could be the problem?
Flink version: 1.6.2
Checkpointing configuration:
Screenshot_2019-05-15_at_13.png
<http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/file/t612/Screenshot_2019-05-15_at_13.png>
Average state size: ~56 MB
-----
Best Regards,
Pedro Chaves
--
Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
