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Re: Could not build the program from JAR file.

You can find more information about the re-worked deployment model here:

TaskManagers are started and shut down according to the slot requirements of
the jobs. It is possible to return to the old behavior by setting

    mode: old

in flink-conf.yaml. However, this mode is deprecated and will be removed soon.
Can you explain why you need to have a static set of TMs?

On Tue, Aug 7, 2018 at 12:07 PM, Florian Simond <florian.simond@xxxxxxxxxx> wrote:

Indeed, that's the solution.

It was done automatically before with 1.4.2, that's why I missed that part...

Do you have any pointer about the dynamic number of TaskManagers ? I'm curious to know how it works. Is it possible to still fix it ?

Thank you,


De : Gary Yao <gary@xxxxxxxxxxxxxxxxx>
Envoyé : mardi 7 août 2018 11:55
À : Florian Simond
Cc : vino yang; user@xxxxxxxxxxxxxxxx
Objet : Re: Could not build the program from JAR file.
Hi Florian,

Can you run

    export HADOOP_CLASSPATH=`hadoop classpath`

before submitting the job [1]?

Moreover, you should not use the -yn parameter. Beginning with Flink 1.5, the
number of TaskManagers is not fixed anymore.


[1] https://ci.apache.org/projects/flink/flink-docs-release-1.5/ops/deployment/hadoop.html#configuring-flink-with-hadoop-classpaths
Deployment & Operations; Clusters & Deployment; Hadoop Integration; Hadoop Integration. Configuring Flink with Hadoop Classpaths; Configuring Flink with Hadoop Classpaths

On Tue, Aug 7, 2018 at 9:22 AM, Florian Simond <florian.simond@xxxxxxxxxx> wrote:

In the log, I can see that:

First exception is a warning, not sure if it is important.

Second one seems to be the one. It tries to find the file "-yn" ???

2018-08-07 09:16:04,776 WARN  org.apache.flink.client.cli.CliFrontend                       - Could not load CLI class org.apache.flink.yarn.cli.FlinkYarnSessionCli.
java.lang.NoClassDefFoundError: org/apache/hadoop/conf/Configuration
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:264)
        at org.apache.flink.client.cli.CliFrontend.loadCustomCommandLine(CliFrontend.java:1208)
        at org.apache.flink.client.cli.CliFrontend.loadCustomCommandLines(CliFrontend.java:1164)
        at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1090)
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.conf.Configuration
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 5 more
2018-08-07 09:16:04,789 INFO  org.apache.flink.core.fs.FileSystem                           - Hadoop is not in the classpath/dependencies. The extended set of supported File Systems via Hadoop is not available.
2018-08-07 09:16:04,967 INFO  org.apache.flink.runtime.security.modules.HadoopModuleFactory  - Cannot create Hadoop Security Module because Hadoop cannot be found in the Classpath.
2018-08-07 09:16:04,991 INFO  org.apache.flink.runtime.security.SecurityUtils               - Cannot install HadoopSecurityContext because Hadoop cannot be found in the Classpath.
2018-08-07 09:16:05,041 INFO  org.apache.flink.client.cli.CliFrontend                       - Running 'run' command.
2018-08-07 09:16:05,046 INFO  org.apache.flink.client.cli.CliFrontend                       - Building program from JAR file
2018-08-07 09:16:05,046 ERROR org.apache.flink.client.cli.CliFrontend                       - Invalid command line arguments.
org.apache.flink.client.cli.CliArgsException: Could not build the program from JAR file.
        at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:208)
        at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1025)
        at org.apache.flink.client.cli.CliFrontend.lambda$main$9(CliFrontend.java:1101)
        at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)
        at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1101)
Caused by: java.io.FileNotFoundException: JAR file does not exist: -yn
        at org.apache.flink.client.cli.CliFrontend.buildProgram(CliFrontend.java:828)
        at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:205)
        ... 4 more

De : vino yang <yanghua1127@xxxxxxxxx>
Envoyé : mardi 7 août 2018 09:01
À : Gary Yao
Cc : Florian Simond; user@xxxxxxxxxxxxxxxx
Objet : Re: Could not build the program from JAR file.
Hi Florian,

The error message is because of a FileNotFoundException, see here[1]. Is there any more information about the exception. Do you make sure the jar exist?

flink - Apache Flink

Thanks, vino.

2018-08-07 14:28 GMT+08:00 Gary Yao <gary@xxxxxxxxxxxxxxxxx>:
Hi Florian,

You write that Flink 1.4.2 works but what version is not working for you?


On Tue, Aug 7, 2018 at 8:25 AM, Florian Simond <florian.simond@xxxxxxxxxx> wrote:

Hi all,

I'm trying to run the wordCount example on my YARN cluster and this is not working.. I get the error message specified in title: Could not build the program from JAR file.

> $ ./bin/flink run -m yarn-cluster -yn 4 -yjm 1024 -ytm 4096 ./examples/batch/WordCount.jar
> Setting HADOOP_CONF_DIR=/etc/hadoop/conf because no HADOOP_CONF_DIR was set.
> Could not build the program from JAR file.

> Use the help option (-h or --help) to get help on the command.

I also have the same problem with a custom JAR...

With Flink 1.4.2, I have no problem at all. Both the WordCount example and my custom JAR are working...

What do I do wrong ?