sunjincheng121 commented on a change in pull request #8472: 
[FLINK-12327][python] Adds support to submit Python Table API job in CliFrontend
URL: https://github.com/apache/flink/pull/8472#discussion_r286387824
 
 

 ##########
 File path: 
flink-clients/src/main/java/org/apache/flink/client/cli/CliFrontend.java
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 @@ -771,22 +774,32 @@ PackagedProgram buildProgram(ProgramOptions options) 
throws FileNotFoundExceptio
                String jarFilePath = options.getJarFilePath();
                List<URL> classpaths = options.getClasspaths();
 
-               if (jarFilePath == null) {
-                       throw new IllegalArgumentException("The program JAR 
file was not specified.");
+               // the job is not a specified a jar file or a Python job.
+               if (!(options.getJarFilePath() != null || options.isPython())) {
+                       throw new IllegalArgumentException("The program should 
be specified a JAR file " +
+                               "or a python file(or module)");
 
 Review comment:
   Same as Line 192 comment.

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