Cannot be avoided. The CLI eagerly loads client classes for yarn, which
as see fails since the hadoop classes aren't available.
If you don't use YARN you can safely ignore this.
On 03.09.2018 14:37, Parth Sarathy wrote:
Hi,
When using flink 1.5.2, “Apache Flink Only” binary
(flink-1.5.2-bin-scala_2.11), following error is seen in client log:
2018-08-30 10:56:59.129 [main] WARN org.apache.flink.client.cli.CliFrontend
- Could not load CLI class org.apache.flink.yarn.cli.FlinkYarnSessionCli.
java.lang.NoClassDefFoundError:
org/apache/hadoop/yarn/exceptions/YarnException
at java.lang.Class.forName0(Native Method) ~[na:1.8.0_171]
at java.lang.Class.forName(Class.java:264) ~[na:1.8.0_171]
at
org.apache.flink.client.cli.CliFrontend.loadCustomCommandLine(CliFrontend.java:1208)
[flink-dist_2.11-1.5.2.jar:1.5.2]
at
org.apache.flink.client.cli.CliFrontend.loadCustomCommandLines(CliFrontend.java:1164)
[flink-dist_2.11-1.5.2.jar:1.5.2]
at
org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1090)
[flink-dist_2.11-1.5.2.jar:1.5.2]
Caused by: java.lang.ClassNotFoundException:
org.apache.hadoop.yarn.exceptions.YarnException
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
~[na:1.8.0_171]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
~[na:1.8.0_171]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
~[na:1.8.0_171]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
~[na:1.8.0_171]
... 5 common frames omitted
There are no functional failures, but how to avoid this exception in log?
Thanks,
Parth Sarathy
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