我正在使用Java openjdk版本"1.8.0_275“的Red Hat Enterprise Linux release 8.3 (Ootpa)上运行Nutch1.18。
我正在遵循这些方向:
当我进入bin/nutch fetch $s1的步骤时,每次获取都会失败。请参阅下面hadoop日志中的错误示例。使用java.lang.NumberFormatException时,它们都失败了。我可以使用curl来检查curl是否可访问以及它们是否可访问。
任何建议都将不胜感激。
at java.lang.NumberFormatException.forInputString
我们使用的是Nutch 2.3.1-src版本。正在执行深度为200的爬网命令。但在几次迭代之后,获取失败,并出现下面提到的运行时异常。 java.lang.RuntimeException: java.lang.IllegalArgumentException: KeyValue size too large
Exception at GoraRecordWriter.class while writing to datastore: KeyValue size too large 爬网命令: /Data/Apache/apache-nutch-2.3.1/runtime/local/bi
我试图在AWS EMR集群上运行带有Apache依赖项的jar。问题是,Nutch找不到插件类(我在用-Dplugin.folders指定插件位置)。我在本地测试了这个选项,它运行良好:java -cp app.jar -Dplugin.folders=./nutch-plugins。
我得到了一个错误:
19/07/24 15:42:26 INFO mapreduce.Job: Task Id : attempt_1563980669003_0005_m_000000_2, Status : FAILED
Error: java.lang.RuntimeException: x point
当我试图使用generate命令生成urls时,我会得到以下错误:
GeneratorJob: java.lang.RuntimeException:作业失败: name=generate: 1357474131-234134646,org.apache.nutch.util.NutchJob.waitForCompletion(NutchJob.java:54) at org.apache.nutch.crawl.GeneratorJob.run(GeneratorJob.java:191) at org.apache.nutch.crawl.GeneratorJob.generate(G
我使用mysql作为nutch的存储后端。
爬网某些站点时作业失败。到达此页面时出现以下异常并退出nutch:
Exception in thread "main" java.lang.RuntimeException: job failed: name=parse, jobid=job_local_0004
at org.apache.nutch.util.NutchJob.waitForCompletion(NutchJob.java:47)
at org.apache.nutch.parse.ParserJob.run(ParserJob.java:249
我在运行nutch进行注入时遇到了问题,下面是我正在运行的命令
bin/nutch注入bin/爬行/爬行bin bin/urls
运行上述命令后,获取以下错误
Injector: starting at 2014-04-02 13:02:29
Injector: crawlDb: bin/crawl/crawldb
Injector: urlDir: bin/urls/seed.txt
Injector: Converting injected urls to crawl db entries.
Injector: total number of urls rejected by filter
当我使用ant构建时,我会遇到以下错误:
BUILD FAILED
/Users/rajeevprasanna/Desktop/Nutch/nutch-release-1.14/build.xml:116: The following error occurred while executing this line:
/Users/rajeevprasanna/Desktop/Nutch/nutch-release-1.14/src/plugin/build.xml:34: The following error occurred while executing this line:
/Use
Exception in thread "main" org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://yuqing-namenode:9000/user/yuqing/2
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:235)
at org.apache.hadoop.mapreduce.lib.input.
如何使用nutch抓取基于身份验证的页面?我已经在nutch-site.xml、nutch-default.xml和httpclient-auth.xml中完成了所有必需的设置。不过,它仍然显示以下内容:
Generator: 0 records selected for fetching, exiting ...
Stopping at depth=1 - no more URLs to fetch.
我已经关注了下面的链接,。但是我的爬虫仍然不能抓取页面。有没有什么方法可以让我使用API密钥来帮助抓取?
我正在使用iOS上的Nutch1.4本地,来爬行一个网站,Nutch readseg dump没有返回任何相关信息。我遗漏了什么?
I am trying to extract 'category' as new metadata from url. I am using replace to extract substring from the url. I am able to run the code and index the documents in Google Cloud Search. But it is not capturin
我跟踪了的设置,然后跑了
bin/crawl urls -depth 1 -topN 2
但是它通过了一个IOException,如下所示
InjectorJob: starting at 2014-03-15 12:22:10
InjectorJob: Injecting urlDir: urls
InjectorJob: org.apache.gora.util.GoraException: java.io.IOException:om.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in