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Posted to issues@flink.apache.org by "Renkai Ge (JIRA)" <ji...@apache.org> on 2016/09/07 04:31:20 UTC
[jira] [Created] (FLINK-4587) Yet another
java.lang.NoSuchFieldError: INSTANCE
Renkai Ge created FLINK-4587:
--------------------------------
Summary: Yet another java.lang.NoSuchFieldError: INSTANCE
Key: FLINK-4587
URL: https://issues.apache.org/jira/browse/FLINK-4587
Project: Flink
Issue Type: Bug
Components: Local Runtime
Affects Versions: 1.2.0
Environment: Latest SNAPSHOT
Reporter: Renkai Ge
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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