使用crawl命令进行抓取时，console输出日志如下：

1、InjectorJob
此步骤将seed.txt中的url注入抓取队列中进行初始化。
（1）基本命令
$ bin/nutch inject Usage: InjectorJob <url_dir> [-crawlId <id>]$ bin/nutch inject urlsInjectorJob: starting at 2014-12-20 22:32:01InjectorJob: Injecting urlDir: urlsInjectorJob: Using class org.apache.gora.hbase.store.HBaseStore as the Gora storage class.InjectorJob: total number of urls rejected by filters: 0InjectorJob: total number of urls injected after normalization and filtering: 1

Injector: finished at 2014-12-20 22:32:15, elapsed: 00:00:14
其中urls/seed.txt的内容如下：
http://stackoverflow.com/

（2）查看注入的url
上述步骤会在hbase中新建一个表，表名为test_1_webpage，url的相应内容会写入这张表
hbase(main):002:0> scan '334_webpage'
ROW                              COLUMN+CELL                                                                               com.stackoverflow:http/         column=f:fi, timestamp=1408953100271, value=\x00'\x8D\x00                                  com.stackoverflow:http/         column=f:ts, timestamp=1408953100271, value=\x00\x00\x01H\x0C&\x11\x8D                     com.stackoverflow:http/         column=mk:_injmrk_, timestamp=1408953100271, value=y                                       com.stackoverflow:http/         column=mk:dist, timestamp=1408953100271, value=0                                           com.stackoverflow:http/         column=mtdt:_csh_, timestamp=1408953100271, value=?\x80\x00\x00                            com.stackoverflow:http/         column=s:s, timestamp=1408953100271, value=?\x80\x00\x00
1 row(s) in 0.3020 seconds

(3)关于**_webpage表
对于每一个任务，均会生成一个crawlId_webpage的表，所有已抓取及未抓取的url相关信息均会存入此表。
若url未抓取，则该url相应的行信息较少。若url已经抓取，则抓取到的内容也会放入该行，如网页内容等。2、GeneratorJob
（1）基本命令
[jediael@jediael local]$  bin/nutch generate -crawlId 334
GeneratorJob: starting at 2014-08-25 15:57:12
GeneratorJob: Selecting best-scoring urls due for fetch.
GeneratorJob: starting
GeneratorJob: filtering: true
GeneratorJob: normalizing: true
GeneratorJob: finished at 2014-08-25 15:57:18, time elapsed: 00:00:06
GeneratorJob: generated batch id: 1408953432-1171377744

（2）命令选项
[root@jediael local]# bin/nutch generate
Usage: GeneratorJob [-topN N] [-crawlId id] [-noFilter] [-noNorm] [-adddays numDays]-topN <N>      - number of top URLs to be selected, default is Long.MAX_VALUE -crawlId <id>  - the id to prefix the schemas to operate on, default: storage.crawl.id)"); -noFilter      - do not activate the filter plugin to filter the url, default is true -noNorm        - do not activate the normalizer plugin to normalize the url, default is true -adddays       - Adds numDays to the current time to facilitate crawling urls already fetched sooner then db.fetch.interval.default. Default value is 0.-batchId       - the batch id
----------------------
Please set the params.

（3）查看数据库
hbase(main):003:0> scan '334_webpage'
ROW                              COLUMN+CELL                                                                                com.stackoverflow:http/         column=f:bid, timestamp=1408953437910, value=1408953432-1171377744                         com.stackoverflow:http/         column=f:fi, timestamp=1408953100271, value=\x00'\x8D\x00                                  com.stackoverflow:http/         column=f:ts, timestamp=1408953100271, value=\x00\x00\x01H\x0C&\x11\x8D                     com.stackoverflow:http/         column=mk:_gnmrk_, timestamp=1408953437910, value=1408953432-1171377744                    com.stackoverflow:http/         column=mk:_injmrk_, timestamp=1408953100271, value=y                                       com.stackoverflow:http/         column=mk:dist, timestamp=1408953100271, value=0                                           com.stackoverflow:http/         column=mtdt:_csh_, timestamp=1408953100271, value=?\x80\x00\x00                            com.stackoverflow:http/         column=s:s, timestamp=1408953100271, value=?\x80\x00\x00
1 row(s) in 0.0490 seconds
此步骤新增了f:bid，mk:_gnmrk_  两列。

3、FetcherJob
（1）基本命令
[jediael@jediael local]$  bin/nutch generate -crawlId 334
GeneratorJob: starting at 2014-08-25 15:57:12
GeneratorJob: Selecting best-scoring urls due for fetch.
GeneratorJob: starting
GeneratorJob: filtering: true
GeneratorJob: normalizing: true
GeneratorJob: finished at 2014-08-25 15:57:18, time elapsed: 00:00:06
GeneratorJob: generated batch id: 1408953432-1171377744
[jediael@jediael local]$  bin/nutch fetch -all -crawlId 334
FetcherJob: starting
FetcherJob: fetching all
Fetcher: Your 'http.agent.name' value should be listed first in 'http.robots.agents' property.
FetcherJob: threads: 10
FetcherJob: parsing: false
FetcherJob: resuming: false
FetcherJob : timelimit set for : -1
Using queue mode : byHost
Fetcher: threads: 10
QueueFeeder finished: total 1 records. Hit by time limit :0
Fetcher: throughput threshold: -1
Fetcher: throughput threshold sequence: 5
fetching http://stackoverflow.com/ (queue crawl delay=5000ms)
-finishing thread FetcherThread1, activeThreads=8
-finishing thread FetcherThread7, activeThreads=7
-finishing thread FetcherThread6, activeThreads=6
-finishing thread FetcherThread5, activeThreads=5
-finishing thread FetcherThread4, activeThreads=4
-finishing thread FetcherThread3, activeThreads=3
-finishing thread FetcherThread2, activeThreads=2
-finishing thread FetcherThread8, activeThreads=1
-finishing thread FetcherThread9, activeThreads=1
-finishing thread FetcherThread0, activeThreads=0
0/0 spinwaiting/active, 1 pages, 0 errors, 0.2 0 pages/s, 102 102 kb/s, 0 URLs in 0 queues
-activeThreads=0
FetcherJob: done（2）查看数据库
见db1.txt
新增f:bas，column=f:cnt，column=f:prot，f:pts，f:st，f:ts，f:typ，h:Cache-Control，h:Connection，h:Content-Encoding，h:Content-Length, h:Content-Type,h:Date,h:Expires, h:Last-Modified,h:Set-Cookie,h:Vary,h:X-Frame-Options, mk:_ftcmrk_等字段

4、ParserJob
（1）基本命令
[jediael@jediael local]$ bin/nutch parse  -all -crawlId 334
ParserJob: starting
ParserJob: resuming:    false
ParserJob: forced reparse:      false
ParserJob: parsing all
Parsing http://stackoverflow.com/
ParserJob: success

（2）命令参数
[root@jediael local]# bin/nutch parse
Usage: ParserJob (<batchId> | -all) [-crawlId <id>] [-resume] [-force]<batchId>     - symbolic batch ID created by Generator-crawlId <id> - the id to prefix the schemas to operate on, 

                    (default: storage.crawl.id)-all          - consider pages from all crawl jobs-resume       - resume a previous incomplete job-force        - force re-parsing even if a page is already parsed

（3）查看数据库
见db_parse.txt
新增了很多类似column=ol:http://stackoverflow.com/help的列，在此例中共有115个。5、DbUpdaterJob
（1）基本命令
[jediael@jediael local]$ bin/nutch updatedb -crawlId 334
DbUpdaterJob: starting
DbUpdaterJob: done

（2）查看数据库
见db_updatedb.txt
解释了上述的115个column=ol:http，并生成了115行新数据，举其中一个例子如下：
com.stackoverflow:http/users/39 column=f:fi, timestamp=1408954979355, value=\x00'\x8D\x00                                  44974/silviu-oncioiu                                                                                                       com.stackoverflow:http/users/39 column=f:st, timestamp=1408954979355, value=\x00\x00\x00\x01                               44974/silviu-oncioiu                                                                                                       com.stackoverflow:http/users/39 column=f:ts, timestamp=1408954979355, value=\x00\x00\x01H\x0CB\xD4\x09                     44974/silviu-oncioiu                                                                                                       com.stackoverflow:http/users/39 column=mk:dist, timestamp=1408954979355, value=1                                           44974/silviu-oncioiu                                                                                                       com.stackoverflow:http/users/39 column=mtdt:_csh_, timestamp=1408954979355, value=<\x0Ex5                                  44974/silviu-oncioiu                                                                                                       com.stackoverflow:http/users/39 column=s:s, timestamp=1408954979355, value=<\x0Ex5                                         44974/silviu-oncioiu                                                                                                       com.stackoverflow:http/users/39 column=f:fi, timestamp=1408954979355, value=\x00'\x8D\x00                                  74525/laosi                                                                                                                com.stackoverflow:http/users/39 column=f:st, timestamp=1408954979355, value=\x00\x00\x00\x01                               74525/laosi                                                                                                                com.stackoverflow:http/users/39 column=f:ts, timestamp=1408954979355, value=\x00\x00\x01H\x0CB\xD4\x09                     74525/laosi                                                                                                                com.stackoverflow:http/users/39 column=mk:dist, timestamp=1408954979355, value=1                                           74525/laosi                                                                                                                com.stackoverflow:http/users/39 column=mtdt:_csh_, timestamp=1408954979355, value=<\x0Ex5                                  74525/laosi                                                                                                                com.stackoverflow:http/users/39 column=s:s, timestamp=1408954979355, value=<\x0Ex5                                         74525/laosi
此时数据已准备好，等待下一轮的抓取。

6、SolrIndexerJob
（1）基本命令
[jediael@jediael local]$  bin/nutch solrindex http://****/solr/  -all -crawlId 334
SolrIndexerJob: starting
Adding 1 documents
SolrIndexerJob: done.

（2）命令参数
[root@jediael local]# bin/nutch solrindex
Usage: SolrIndexerJob <solr url> (<batchId> | -all | -reindex) [-crawlId <id>]

（3）查看数据库
无变化