【使用时发生的意外】file is not sufficiently replicated yet

异常堆栈如下：

-- ::, ERROR [com.ultrapower.secsight.util.HdfsUtil] - 追加写入文件失败！
org.apache.hadoop.ipc.RemoteException(java.io.IOException): append: lastBlock=blk_1075691975_50802816 of src=/hebei/stdlog/std_log0001//p0001 is not sufficiently replicated yet.
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFileInternal(FSNamesystem.java:)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFileInt(FSNamesystem.java:)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFile(FSNamesystem.java:)
    at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.append(NameNodeRpcServer.java:)
    at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.append(AuthorizationProviderProxyClientProtocol.java:)
    at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.append(ClientNamenodeProtocolServerSideTranslatorPB.java:)
    at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$.callBlockingMethod(ClientNamenodeProtocolProtos.java)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:)
    at org.apache.hadoop.ipc.Server$Handler$.run(Server.java:)
    at org.apache.hadoop.ipc.Server$Handler$.run(Server.java:)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:)

    at org.apache.hadoop.ipc.Client.call(Client.java:)
    at org.apache.hadoop.ipc.Client.call(Client.java:)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:)
    at com.sun.proxy.$Proxy14.append(Unknown Source)
    at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.append(ClientNamenodeProtocolTranslatorPB.java:)
    at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)
    at java.lang.reflect.Method.invoke(Method.java:)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:)
    at com.sun.proxy.$Proxy15.append(Unknown Source)
    at org.apache.hadoop.hdfs.DFSClient.callAppend(DFSClient.java:)
    at org.apache.hadoop.hdfs.DFSClient.append(DFSClient.java:)
    at org.apache.hadoop.hdfs.DFSClient.append(DFSClient.java:)
    at org.apache.hadoop.hdfs.DistributedFileSystem$.doCall(DistributedFileSystem.java:)
    at org.apache.hadoop.hdfs.DistributedFileSystem$.doCall(DistributedFileSystem.java:)
    at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:)
    at org.apache.hadoop.hdfs.DistributedFileSystem.append(DistributedFileSystem.java:)
    at org.apache.hadoop.fs.FileSystem.append(FileSystem.java:)
    at com.ultrapower.secsight.util.HdfsUtil.appendWriteFile(HdfsUtil.java:)
    at com.ultrapower.secsight.job.sync.writer.HDFSWriter.write(HDFSWriter.java:)
    at com.ultrapower.secsight.job.maker.RunnerJob.lambda$sync$(RunnerJob.java:)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:)
    at java.lang.Thread.run(Thread.java:)

发生的场景：

　　hadoop 2.6.1版本

　　追加HDFS过于频繁！！执行文件复制时出错。

解决办法：

　　一次性写入多缓存数据 避免频繁追加HDFS文件

If I run fsck it says the file is corrupt - missing one block. Sometimes the filesystem gets healthy with a random combination of running balancer/namenode recovery/hdfs dfs -setrep. After running the append for a while, the original problem reappears. I even once removed one node already which had corrupt data and the system got 100 % healthy without any problems - for a while.

https://stackoverflow.com/questions/26361470/not-sufficiently-replicated-yet-when-appending-to-a-file-in-hdfs