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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-5739) NullPointerException in CliFrontend
Date Sat, 18 Feb 2017 02:28:44 GMT

    [ https://issues.apache.org/jira/browse/FLINK-5739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15872914#comment-15872914
] 

ASF GitHub Bot commented on FLINK-5739:
---------------------------------------

Github user clarkyzl commented on the issue:

    https://github.com/apache/flink/pull/3292
  
    Thanks a lot


> NullPointerException in CliFrontend
> -----------------------------------
>
>                 Key: FLINK-5739
>                 URL: https://issues.apache.org/jira/browse/FLINK-5739
>             Project: Flink
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 1.3.0
>         Environment: Mac OS X 10.12.2, Java 1.8.0_92-b14
>            Reporter: Zhuoluo Yang
>            Assignee: Zhuoluo Yang
>              Labels: newbie, starter
>             Fix For: 1.3.0
>
>
> I've run a simple program on a local cluster. It always fails with code Version: 1.3-SNAPSHOTCommit:
e24a866. 
> {quote}
> Zhuoluos-MacBook-Pro:build-target zhuoluo.yzl$ bin/flink run -c com.alibaba.blink.TableApp
~/gitlab/tableapp/target/tableapp-1.0-SNAPSHOT.jar 
> Cluster configuration: Standalone cluster with JobManager at localhost/127.0.0.1:6123
> Using address localhost:6123 to connect to JobManager.
> JobManager web interface address http://localhost:8081
> Starting execution of program
> ------------------------------------------------------------
>  The program finished with the following exception:
> java.lang.NullPointerException
> 	at org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:845)
> 	at org.apache.flink.client.CliFrontend.run(CliFrontend.java:259)
> 	at org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1076)
> 	at org.apache.flink.client.CliFrontend$2.call(CliFrontend.java:1123)
> 	at org.apache.flink.client.CliFrontend$2.call(CliFrontend.java:1120)
> 	at org.apache.flink.runtime.security.HadoopSecurityContext$1.run(HadoopSecurityContext.java:43)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:422)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
> 	at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:40)
> 	at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1120)
> {quote}
> I don't think there should be a NullPointerException here, even if you forgot the "execute()"
call.
> The reproducing code looks like following:
> {code:java}
>     public static void main(String[] args) throws Exception {
>         ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
>         DataSource<String> customer = env.readTextFile("/Users/zhuoluo.yzl/customer.tbl");
>         customer.filter(new FilterFunction<String>() {
>             public boolean filter(String value) throws Exception {
>                 return true;
>             }
>         })
>         .writeAsText("/Users/zhuoluo.yzl/customer.txt");
> //        env.execute();
>     }
> {code}
> We can use *start-cluster.sh* on a *local* computer to reproduce the problem.



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