如何使用hadoop Map reduce处理/提取.pst [英] How to process/extract .pst using hadoop Map reduce

问题描述

我正在使用 MAPI 工具(其Microsoft lib和.NET)，然后使用 apache TIKA 库来处理和提取 pst 交换服务器，这是不可扩展的.

I am using MAPI tools (Its microsoft lib and in .NET) and then apache TIKA libraries to process and extract the pst from exchange server, which is not scalable.

我如何使用MR方式处理/提取pst ... java是否有可用的工具和库供我在MR作业中使用.任何帮助将是全力以赴.

How can I process/extracts pst using MR way ... Is there any tool, library available in java which I can use in my MR jobs. Any help would be great-full .

Jpst Lib内部使用:PstFile pstFile = new PstFile(java.io.File)

Jpst Lib internally uses: PstFile pstFile = new PstFile(java.io.File)

问题出在 Hadoop API 上，因为我们没有与java.io.File接近的东西.

And the problem is for Hadoop API's we don't have anything close to java.io.File.

以下选项始终存在，但效率不高:

Following option is always there but not efficient:

  File tempFile = File.createTempFile("myfile", ".tmp");
  fs.moveToLocalFile(new Path (<HDFS pst path>) , new Path(tempFile.getAbsolutePath()) );
  PstFile pstFile = new PstFile(tempFile);

推荐答案

看看Behemoth(http://digitalpebble.blogspot.com/2011/05/processing-enron-dataset-using-behemoth.html).它结合了Tika和Hadoop.

Take a look at Behemoth (http://digitalpebble.blogspot.com/2011/05/processing-enron-dataset-using-behemoth.html). It combines Tika and Hadoop.

我还由自己的Hadoop + Tika职位撰写.该模式是:

I've also written by own Hadoop + Tika jobs. The pattern is:

1. 将所有pst文件包装为序列文件或avro文件.
2. 编写仅映射作业，该作业将从avro文件中读取pst文件并将其写入本地磁盘.
3. 在文件中运行tika.
4. 将tika的输出写回到序列文件中

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