You can use Nutch 2.1 or Nutch 1.6. If you want to use HBase, you need to use Nutch 2.x. Because nutch 1.6 does not support Hbase. I am using nutch 2.1, HBase 0.90.x or 0.94.5 and Solr 4.3.0.
There are significant changes between the two versions of Solr (Solr 3.x and Solr 4.x). You must choose one of them according to your requirement. Example: Solr4 cloud support is better.
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