Flume-ng-1.4.0 spooling source的方式增加了对目录的递归检测的支持

不过在1.4中已经不是修改SpoolingFileLineReader类了，而是apache-flume-1.4.0-src\flume-ng-core\src\main\java\org\apache\flume\client\avro\ReliableSpoolingFileEventReader.java

并且变量directory应该改为spoolDirectory

 1     /*
 2      * @author admln
 3      *
 4      * @date 2015年4月8日 上午9:37:20
 5      */
 6     private void listDirFiles(List<File> files, File dir, FileFilter filter) {
 7         File[] childs = dir.listFiles(filter);
 8         for (int i = 0; i < childs.length; i++) {
 9             if (childs[i].isFile()) {
10                 files.add(childs[i]);
11             } else {
12                 if (childs[i].isDirectory()) {
13                     listDirFiles(files, childs[i], filter);
14                 }
15             }
16         }
17     }
18
19     /**
20      * Find and open the oldest file in the chosen directory. If two or more
21      * files are equally old, the file name with lower lexicographical value is
22      * returned. If the directory is empty, this will return an absent option.
23      */
24     private Optional<FileInfo> getNextFile() {
25         /* Filter to exclude finished or hidden files */
26         FileFilter filter = new FileFilter() {
27             public boolean accept(File candidate) {
28                 String fileName = candidate.getName();
29                 if ((candidate.isDirectory())
30                         || (fileName.endsWith(completedSuffix))
31                         || (fileName.startsWith("."))
32                         || ignorePattern.matcher(fileName).matches()) {
33                     return false;
34                 }
35                 return true;
36             }
37         };
38         // List<File> candidateFiles =
39         // Arrays.asList(spoolDirectory.listFiles(filter));
40         List<File> candidateFiles = new ArrayList<File>();
41         listDirFiles(candidateFiles, spoolDirectory, filter);

mvn install -Phadoop-2 -DskipTests -Dtar

会下很多各种jar包，很浪费时间