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https://issues.apache.org/jira/browse/FLINK-4587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16059508#comment-16059508
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Razvan commented on FLINK-4587:
-------------------------------
@[~RenkaiGe] I have the same issue. Using Flink 1.2 and created an application
to call some REST endpoints using HttpClient. Does this mean I need to build
Flink?
> 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?
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