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PONutch and HBase for production
 

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  1. PONutch and HBase for production
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    <p>I am currently using Nutch 2.2.1 and HBase 0.90.4. I am expecting around 300K urls from about 10 URLS in seed. I have already generated so much while using Nutch 1.6. Since I want to manipulate data, I preferred to go Nutch 2.2.1 + HBase route. But I get all sorts of weird errors and crawl doesn't seem to progress.</p> <p>Various errors such as:</p> <ol> <li><p><strong>zookeeper.ClientCnxn - Session for server null, unexpected error, closing socket connection and attempting reconnect.</strong> - I get this more frequently</p></li> <li><p><strong>bin/crawl: line 164: killed</strong> - I get this error from fetch step and the crawling gets killed all of a sudden. </p></li> <li><p>RSS parse error</p></li> </ol> <p>I am using a all-in-one crawl command - <code>bin/crawl urls 1 http://localhost:8983/solr/ 10</code> </p> <pre><code>&lt;crawl&gt; &lt;seed-dir&gt; &lt;crawl-id&gt; &lt;solr-url&gt; &lt;number of rounds&gt; </code></pre> <p>Please suggest where am I going wrong. I have Nutch 2.2.1 <a href="http://wiki.apache.org/nutch/Nutch2Tutorial" rel="nofollow">installed</a> and HBase (standalone) installed as per the <a href="http://hbase.apache.org/book/quickstart.html" rel="nofollow">Quick start guide</a> recommended from Nutch site. I am not sure following HBase 0.90.4 standalone set up from <strong>Quick</strong> start guide link is sufficient to achieve 300K crawled urls.</p> <hr> <p>Edit # 1: RSS Parse Error - log information</p> <p><strong>Error tika.TikaParser - Error parsing <a href="http://www.###.###.##/###/abc.xml">http://www.###.###.##/###/abc.xml</a> org.apache.tika.exception.TikaException: RSS parse error</strong></p>
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    1. USsunskin
    1. USsunskin
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    1. COThe zookeeper reminds me some hbase-site.xml misconfiguration. Can you check where is your hbase-site.xml to be read by Nutch? (or copy from your HBase's conf/ to Nutch's conf/). The second, try `nutch fetch <...>` and paste logs. About your third, what do you mean with "RSS" parse error? I assume it is failing in the first loop.
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      1. PONutch and HBase for production
      1. USAlfonso Nishikawa
    2. COHey Alfonso! Thanks for your reply. I never thought about copying the hbase/conf/hbase-site.xml to Nutch/conf. Thanks for bringing it up!
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    3. COI added more information on RSS parse error
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