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Stephan Ewen commented on FLINK-4587: ------------------------------------- [~RenkaiGe] Is this issue still valid, or has it been resolved in the way described above? > Yet another java.lang.NoSuchFieldError: INSTANCE > ------------------------------------------------ > > Key: FLINK-4587 > URL: https://issues.apache.org/jira/browse/FLINK-4587 > Project: Flink > Issue Type: Bug > Components: Build System, Local Runtime > Affects Versions: 1.2.0 > Environment: Latest SNAPSHOT > Reporter: Renkai Ge > Attachments: diff in mvn clean package.png, flink-explore-src.zip > > > For some reason I need to use org.apache.httpcomponents:httpasyncclient:4.1.2 > in flink. > The source file is: > {code} > import org.apache.flink.streaming.api.scala._ > import org.apache.http.impl.nio.conn.ManagedNHttpClientConnectionFactory > /** > * Created by renkai on 16/9/7. > */ > object Main { > def main(args: Array[String]): Unit = { > val instance = ManagedNHttpClientConnectionFactory.INSTANCE > println("instance = " + instance) > val env = StreamExecutionEnvironment.getExecutionEnvironment > val stream = env.fromCollection(1 to 100) > val result = stream.map { x => > x * 2 > } > result.print() > env.execute("xixi") > } > } > {code} > and > {code} > name := "flink-explore" > version := "1.0" > scalaVersion := "2.11.8" > crossPaths := false > libraryDependencies ++= Seq( > "org.apache.flink" %% "flink-scala" % "1.2-SNAPSHOT" > exclude("com.google.code.findbugs", "jsr305"), > "org.apache.flink" %% "flink-connector-kafka-0.8" % "1.2-SNAPSHOT" > exclude("com.google.code.findbugs", "jsr305"), > "org.apache.flink" %% "flink-streaming-scala" % "1.2-SNAPSHOT" > exclude("com.google.code.findbugs", "jsr305"), > "org.apache.flink" %% "flink-clients" % "1.2-SNAPSHOT" > exclude("com.google.code.findbugs", "jsr305"), > "org.apache.httpcomponents" % "httpasyncclient" % "4.1.2" > ) > {code} > I use `sbt assembly` to get a fat jar. > If I run the command > {code} > java -cp flink-explore-assembly-1.0.jar Main > {code} > I get the result > {code} > instance = > org.apache.http.impl.nio.conn.ManagedNHttpClientConnectionFactory@4909b8da > log4j:WARN No appenders could be found for logger > (org.apache.flink.api.scala.ClosureCleaner$). > log4j:WARN Please initialize the log4j system properly. > log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more > info. > Connected to JobManager at Actor[akka://flink/user/jobmanager_1#-1177584915] > 09/07/2016 12:05:26 Job execution switched to status RUNNING. > 09/07/2016 12:05:26 Source: Collection Source(1/1) switched to SCHEDULED > 09/07/2016 12:05:26 Source: Collection Source(1/1) switched to DEPLOYING > ... > 09/07/2016 12:05:26 Map -> Sink: Unnamed(20/24) switched to RUNNING > 09/07/2016 12:05:26 Map -> Sink: Unnamed(19/24) switched to RUNNING > 15> 30 > 20> 184 > ... > 19> 182 > 1> 194 > 8> 160 > 09/07/2016 12:05:26 Source: Collection Source(1/1) switched to FINISHED > ... > 09/07/2016 12:05:26 Map -> Sink: Unnamed(1/24) switched to FINISHED > 09/07/2016 12:05:26 Job execution switched to status FINISHED. > {code} > Nothing special. > But if I run the jar by > {code} > ./bin/flink run shop-monitor-flink-assembly-1.0.jar > {code} > I will get an error > {code} > $ ./bin/flink run flink-explore-assembly-1.0.jar > Cluster configuration: Standalone cluster with JobManager at /127.0.0.1:6123 > Using address 127.0.0.1:6123 to connect to JobManager. > JobManager web interface address http://127.0.0.1:8081 > Starting execution of program > ------------------------------------------------------------ > The program finished with the following exception: > java.lang.NoSuchFieldError: INSTANCE > at > org.apache.http.impl.nio.codecs.DefaultHttpRequestWriterFactory.<init>(DefaultHttpRequestWriterFactory.java:53) > at > org.apache.http.impl.nio.codecs.DefaultHttpRequestWriterFactory.<init>(DefaultHttpRequestWriterFactory.java:57) > at > org.apache.http.impl.nio.codecs.DefaultHttpRequestWriterFactory.<clinit>(DefaultHttpRequestWriterFactory.java:47) > at > org.apache.http.impl.nio.conn.ManagedNHttpClientConnectionFactory.<init>(ManagedNHttpClientConnectionFactory.java:75) > at > org.apache.http.impl.nio.conn.ManagedNHttpClientConnectionFactory.<init>(ManagedNHttpClientConnectionFactory.java:83) > at > org.apache.http.impl.nio.conn.ManagedNHttpClientConnectionFactory.<clinit>(ManagedNHttpClientConnectionFactory.java:64) > at Main$.main(Main.scala:9) > at Main.main(Main.scala) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:497) > at > org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:509) > at > org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:403) > at > org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:322) > at > org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:774) > at org.apache.flink.client.CliFrontend.run(CliFrontend.java:250) > at > org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1002) > at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1045) > {code} > I tried hard to find the reason of this exception, usually it is caused by > another class with same package and classname but have different content in > the classpath,but I checked every jar in FLINK_HOME/lib, there is no class > named DefaultHttpRequestWriterFactory. > I doubt the jar file is somehow broken by > org.apache.flink.runtime.execution.librarycache.BlobLibraryCacheManager, but > I don't have any evidence.Could anyone help? -- This message was sent by Atlassian JIRA (v6.3.4#6332)