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flume-ng-sources/flume-taildir-source/src/main/java/org/apache/flume/source/taildir/ReliableTaildirEventReader.java
 (line 206)
<https://reviews.apache.org/r/50134/#comment208561>

    Can we put this if statement in the above loop, right under line 203, to 
avoid looping over all of the events twice?
    
    Hotspot should optimize-out the branches (and probably even the loop when 
everything is disabled) so I think we will get better performance in general.
    
    So it would look like:
    
    // Add headers to each event as needed.
    Map<String, String> headers = currentFile.getHeaders();
    for (Event event : events) {
      if (headers != null && !headers.isEmpty()) {
        event.getHeaders().putAll(headers);
      }
      if (annotateFileName) {
        String filename = currentFile.getPath();
        event.getHeaders().put(fileNameHeader, filename);
      }
    }



flume-ng-sources/flume-taildir-source/src/test/java/org/apache/flume/source/taildir/TestTaildirSource.java
 (line 49)
<https://reviews.apache.org/r/50134/#comment208564>

    It is allowed to have long lines that are imports. No need to wrap this 
one. (Usually, though, you need to wrap long lines.)


- Mike Percy


On July 19, 2016, 8:09 a.m., qiao wen wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/50134/
> -----------------------------------------------------------
> 
> (Updated July 19, 2016, 8:09 a.m.)
> 
> 
> Review request for Flume.
> 
> 
> Bugs: FLUME-2955
>     https://issues.apache.org/jira/browse/FLUME-2955
> 
> 
> Repository: flume-git
> 
> 
> Description
> -------
> 
> Log file path is necessary to locate the log. Add a parameter PATH_HEADER in 
> the TaildirSourceConstants. If the parameter is true, the file path will be 
> added to the header of flume event. Defaut value is false.
> 
> 
> Diffs
> -----
> 
>   flume-ng-doc/sphinx/FlumeUserGuide.rst f9ca1b2 
>   
> flume-ng-sources/flume-taildir-source/src/main/java/org/apache/flume/source/taildir/ReliableTaildirEventReader.java
>  1409f25 
>   
> flume-ng-sources/flume-taildir-source/src/main/java/org/apache/flume/source/taildir/TaildirSource.java
>  eae1b1a 
>   
> flume-ng-sources/flume-taildir-source/src/main/java/org/apache/flume/source/taildir/TaildirSourceConfigurationConstants.java
>  2c49540 
>   
> flume-ng-sources/flume-taildir-source/src/test/java/org/apache/flume/source/taildir/TestTaildirSource.java
>  e090b74 
> 
> Diff: https://reviews.apache.org/r/50134/diff/
> 
> 
> Testing
> -------
> 
> mvn clean install -DskipTests -> built
> junit tests for flume-taildir-source module -> passed
> 
> 
> Thanks,
> 
> qiao wen
> 
>

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