how to turn on logging, excersize analyzer, tips on debugging plugins?

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how to turn on logging, excersize analyzer, tips on debugging plugins?

T. Kuro Kurosaka
Nutch develpers,
I'm writing my a language analyzer and have three questions.
Any pointer will be appreciated.

1. How do I turn on the logging facility?

2. Is there an easy way to run just an analyzer plugin, rather than
running "nutch crawl"?

3. How do I run debugger (eclipse, in may case) over the plugin
code that would be loaded later? I.e. where do I set the break point
before the plugin gets loaded?

Thank you in advance.

-kuro