> No, Hadoop do not use Lucene. have studied like http://highscalability.com/how-rackspace-now-uses-mapreduce-and-hadoop-query-terabytes-data
---Given that..... The way the current Hadoop based system works is: Raw logs get streamed from hundreds of mail servers to the Hadoop Distributed File System (HDFS) in real time. MapReduce jobs are scheduled run to index the new data using Apache Lucene and Solr. Once the indexes have been built, they are compressed and stored away in HDFS. Each Hadoop datanode runs a Tomcat servlet container, which hosts a number of Solr instances that pull and merge the new indexes, and provide really fast search results to our support team. > And do you mean slor combine the Lucene and Hadoop ? No..Is that Solr (search server) uses Lucene (has library) that supports the search..Solr needs Lucene to perform full-text indexing and searching etc.,am i right?? > > > > On Fri, Feb 26, 2010 at 2:52 PM, <gs...@tce.edu> wrote: > >> hi all >> when studying how hadoop framework works i have noticed that >> map reduce in turn uses apache lucene for creating index for scheduled >> new data and solr for creating instances. Is that right??? >> thanks >> sujitha >> >> >> >> >> ----------------------------------------- >> This email was sent using TCEMail Service. >> Thiagarajar College of Engineering >> Madurai-625 015, India >> >> > > > -- > Best Regards > > Jeff Zhang > -- Suji ----------------------------------------- This email was sent using TCEMail Service. Thiagarajar College of Engineering Madurai-625 015, India
