我目前正在开发一个Flink 1.4应用程序,从Hadoop集群中读取一个Avro文件。然而,在我的IDE中以本地模式运行它是完全正常的。但是当我将其提交到Jobmanager Flink时,总是会出现以下错误信息:
java.io.IOException: Error opening the Input Split hdfs://namenode/topics/CaseLocations/partition=0/CaseLocations+0+0000155791+0000255790.avro [0,16549587]: Could not find a file system implementation for scheme 'hdfs'. The scheme is not directly supported by Flink and no Hadoop file system to support this scheme could be loaded.
at org.apache.flink.api.common.io.FileInputFormat.open(FileInputFormat.java:705)
at org.apache.flink.formats.avro.AvroInputFormat.open(AvroInputFormat.java:110)
at org.apache.flink.formats.avro.AvroInputFormat.open(AvroInputFormat.java:54)
at org.apache.flink.runtime.operators.DataSourceTask.invoke(DataSourceTask.java:145)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:718)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.flink.core.fs.UnsupportedFileSystemSchemeException: Could not find a file system implementation for scheme 'hdfs'. The scheme is not directly supported by Flink and no Hadoop file system to support this scheme could be loaded.
at org.apache.flink.core.fs.FileSystem.getUnguardedFileSystem(FileSystem.java:405)
at org.apache.flink.core.fs.FileSystem.get(FileSystem.java:320)
at org.apache.flink.api.common.io.FileInputFormat$InputSplitOpenThread.run(FileInputFormat.java:864)
Caused by: org.apache.flink.core.fs.UnsupportedFileSystemSchemeException: Hadoop File System abstraction does not support scheme 'hdfs'. Either no file system implementation exists for that scheme, or the relevant classes are missing from the classpath.
at org.apache.flink.runtime.fs.hdfs.HadoopFsFactory.create(HadoopFsFactory.java:102)
at org.apache.flink.core.fs.FileSystem.getUnguardedFileSystem(FileSystem.java:401)
... 2 more
Caused by: java.io.IOException: No FileSystem for scheme: hdfs
at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2798)
at org.apache.flink.runtime.fs.hdfs.HadoopFsFactory.create(HadoopFsFactory.java:99)
... 3 more
我正在使用官方的Flink Docker镜像 flink:1.4.0-hadoop28-scala_2.11
来运行集群,该镜像应该已经包含了Hadoop分发版。
我还尝试将依赖项添加到我的应用程序JAR文件中,但也没有帮助。这里是我的sbt依赖项:
val flinkVersion = "1.4.0"
val hadoopVersion = "2.8.1"
val providedDependencies = Seq(
"org.apache.flink" %% "flink-clients" % flinkVersion,
"org.apache.flink" %% "flink-scala" % flinkVersion,
"org.apache.flink" %% "flink-streaming-scala" % flinkVersion
)
val compiledDependencies = Seq(
"org.apache.flink" % "flink-hadoop-fs" % flinkVersion,
"org.apache.hadoop" % "hadoop-hdfs" % hadoopVersion,
"org.apache.hadoop" % "hadoop-common" % hadoopVersion,
"org.apache.flink" % "flink-avro" % flinkVersion,
"org.apache.flink" %% "flink-table" % flinkVersion,
"org.scalaj" %% "scalaj-http" % "2.2.1"
)
同时,文件系统类被包含在我的
META-INF/services/org.apache.hadoop.fs.FileSystem
中。我是否遗漏了什么?官方文档对我没有帮助。
提前致谢。
core-site.xml
文件? - OneCricketeer无法加载文件系统:java.util.ServiceConfigurationError:org.apache.hadoop.fs.FileSystem:提供者org.apache.hadoop.hdfs.DistributedFileSystem不是子类型
。你有什么想法,这是什么原因造成的? - Mr. M