Question

火花版本：2.3

火花流应用程序正在从hdfs路径流式传输

  Dataset<Row> lines = spark
  .readStream()
  .format("text")
  .load("path");

在对Data进行一些转换之后，对于一个文件，该作业应该处于成功状态。

已添加作业列表器以结束作业，并在触发文件时移动文件。

@Override
public void onJobENd(SparkListenerJobEnd jobEnd) {
// Move source file to some other location which is finished processing. 
}

文件已成功移动到另一个位置。但与此同时（精确的时间戳记），火花会在未找到文件后引发异常，这是随机发生的，无法复制。但是经常发生
即使特定作业已结束，spark仍以某种方式引用该文件。
如何确保作业结束后文件不会被spark引用，并避免找不到该文件的问题
我可以在：here

SparkListenerJobEnd

DAGScheduler does cleanUpAfterSchedulerStop, handleTaskCompletion, failJobAndIndependentStages, and markMapStageJobAsFinished.

Same question with different approach

例外：

    java.io.FileNotFoundException: File does not exist: <filename>
    at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:66)
    at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:56)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsUpdateTimes(FSNamesystem.java:1932)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:1873)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1853)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1825)
    at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:559)
    at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.getBlockLocations(AuthorizationProviderProxyClientProtocol.java:87)
    at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:363)
    at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)
    at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1060)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2044)
    at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2040)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:415)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
    at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2038)

    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
    at org.apache.hadoop.ipc.RemoteExc

Answer 1

它是火花中的错误 https://issues.apache.org/jira/browse/SPARK-24364 邮件线程； http://mail-archives.apache.org/mod_mbox/spark-issues/201805.mbox/%3cJIRA.13161366.1527070555000.13725.1527070560256@Atlassian.JIRA%3e 修复：https://github.com/apache/spark/pull/21408/commits/c52d972e4ca09e0ede1bb9e60d3c07f80f605f88

固定版本：2.3.1 / 2.4.0

Spark JobEnd Listner从hdfs路径移动源文件导致找不到文件异常

1 个答案: