我遇到了flink-1.10.1上的问题。我在带有StreamingFileSink的YARN（3.0.0-cdh6.3.2）上使用了flink。
代码部分如下：
public static <IN> StreamingFileSink<IN> build(String dir, BucketAssigner<IN, String> assigner, String prefix){
return StreamingFileSink.forRowFormat(new Path(dir), new SimpleStringEncoder<IN>())
.withRollingPolicy(
DefaultRollingPolicy.builder()
.withRolloverInterval(TimeUnit.HOURS.toMillis(2))
.withInactivityInterval(TimeUnit.MINUTES.toMillis(10))
.withMaxPartSize(1024L * 1024L * 1024L * 50) // Max 50GB
.build()
)
.withBucketAssigner(assigner)
.withOutputFileConfig(OutputFileConfig.builder().withPartPrefix(prefix).build())
.build();
}
当我运行flink流作业以将数据实时转储到HDFS时，它不稳定，几个小时后，该作业将引发Exception。
错误是
java.io.IOException: Problem while truncating file: hdfs:///business_log/hashtag/2020-06-25/.hashtag-122-37.inprogress.8e65f69c-b5ba-4466-a844-ccc0a5a93de2
at org.apache.flink.runtime.fs.hdfs.HadoopRecoverableFsDataOutputStream.safelyTruncateFile(HadoopRecoverableFsDataOutputStream.java:166)
at org.apache.flink.runtime.fs.hdfs.HadoopRecoverableFsDataOutputStream.<init>(HadoopRecoverableFsDataOutputStream.java:89)
at org.apache.flink.runtime.fs.hdfs.HadoopRecoverableWriter.recover(HadoopRecoverableWriter.java:72)
at org.apache.flink.streaming.api.functions.sink.filesystem.Bucket.restoreInProgressFile(Bucket.java:140)
at org.apache.flink.streaming.api.functions.sink.filesystem.Bucket.<init>(Bucket.java:127)
at org.apache.flink.streaming.api.functions.sink.filesystem.Bucket.restore(Bucket.java:396)
at org.apache.flink.streaming.api.functions.sink.filesystem.DefaultBucketFactoryImpl.restoreBucket(DefaultBucketFactoryImpl.java:64)
at org.apache.flink.streaming.api.functions.sink.filesystem.Buckets.handleRestoredBucketState(Buckets.java:177)
at org.apache.flink.streaming.api.functions.sink.filesystem.Buckets.initializeActiveBuckets(Buckets.java:165)
at org.apache.flink.streaming.api.functions.sink.filesystem.Buckets.initializeState(Buckets.java:149)
at org.apache.flink.streaming.api.functions.sink.filesystem.StreamingFileSink.initializeState(StreamingFileSink.java:334)
at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)
at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)
at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:281)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:878)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:392)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:705)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:530)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException): Failed to TRUNCATE_FILE /user/root/flink/filesink/transaction-test1-text/2019-08-27--07/.part-1-1.inprogress.7e882941-ab98-4404-b16b-87a26256bf4d for DFSClient_NONMAPREDUCE_-1189574442_56 on 172.31.114.177 because DFSClient_NONMAPREDUCE_-1189574442_56 is already the current lease holder.
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.recoverLeaseInternal(FSNamesystem.java:2522)
at org.apache.hadoop.hdfs.server.namenode.FSDirTruncateOp.truncate(FSDirTruncateOp.java:119)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.truncate(FSNamesystem.java:2091)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.truncate(NameNodeRpcServer.java:1070)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.truncate(ClientNamenodeProtocolServerSideTranslatorPB.java:669)
at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:523)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:991)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:869)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:815)
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:1875)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2675)
at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1499)
at org.apache.hadoop.ipc.Client.call(Client.java:1445)
at org.apache.hadoop.ipc.Client.call(Client.java:1355)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:228)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
at com.sun.proxy.$Proxy17.truncate(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.truncate(ClientNamenodeProtocolTranslatorPB.java:366)
at sun.reflect.GeneratedMethodAccessor71.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:422)
at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165)
at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157)
at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359)
at com.sun.proxy.$Proxy18.truncate(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.truncate(DFSClient.java:1545)
at org.apache.hadoop.hdfs.DistributedFileSystem$18.doCall(DistributedFileSystem.java:862)
at org.apache.hadoop.hdfs.DistributedFileSystem$18.doCall(DistributedFileSystem.java:859)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.truncate(DistributedFileSystem.java:869)
at sun.reflect.GeneratedMethodAccessor70.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.flink.runtime.fs.hdfs.HadoopRecoverableFsDataOutputStream.truncate(HadoopRecoverableFsDataOutputStream.java:197)
at org.apache.flink.runtime.fs.hdfs.HadoopRecoverableFsDataOutputStream.safelyTruncateFile(HadoopRecoverableFsDataOutputStream.java:164)
由于此问题，它无法从最新的检查点和保存点重新启动。
当前，我的解决方法是保留最新的3个检查点，如果失败，则手动从倒数检查点重新启动。
我看到这里有一个JIRA错误票证：https://issues.apache.org/jira/browse/FLINK-13874，但没有人修复它，但票证已解决。 我为此创建了一个新的JIRA错误凭单：https://issues.apache.org/jira/browse/FLINK-18592。