Github user steveloughran commented on a diff in the pull request:

    https://github.com/apache/flink/pull/5521#discussion_r169604725
  
    --- Diff: 
flink-core/src/main/java/org/apache/flink/api/common/io/FileInputFormat.java ---
    @@ -819,6 +819,10 @@ public void open(FileInputSplit fileSplit) throws 
IOException {
                        this.stream = isot.waitForCompletion();
                        this.stream = decorateInputStream(this.stream, 
fileSplit);
                }
    +           catch (FileNotFoundException e) {
    +                   throw new FileNotFoundException("Input split " + 
fileSplit.getPath() +
    +                                   " doesn't exist, skip and continue: "  
+ e.getMessage());
    +           }
    --- End diff --
    
    As this exception doesn't have a constructor which takes a nested 
exception, can you use `initCause()` to patch it.
    
    ```java
    throw (FileNotFoundException)(new FileNotFoundException(...)).initCause(e)
    ```


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