Dear Wiki user, You have subscribed to a wiki page or wiki category on "Lucene-hadoop Wiki" for change notification.
The following page has been changed by DougCutting: http://wiki.apache.org/lucene-hadoop/FAQ The comment on the change is: update performance numbers and mention pipes ------------------------------------------------------------------------------ == 3. How well does Hadoop scale? == - Hadoop has been demonstrated on clusters of up to 902 nodes. Sort performance is [https://issues.apache.org/jira/secure/attachment/12356727/post-H-1270.png good] (sort500 i.e. 5TB of data on 500 nodes takes around 2 1/2 hours) and still improving. + Hadoop has been demonstrated on clusters of up to 2000 nodes. Sort performance is good (sorting 9TB of data on 900 nodes takes around 4 hours) and [attachment:sort900-20070607.png improving]. == 4. Do I have to write my application in Java? == - No. There are several ways to incorporate non-Java code. HadoopStreaming permits any shell command to be used as a map or reduce function, and Hadoop is also developing [http://svn.apache.org/viewvc/lucene/hadoop/trunk/src/c%2B%2B/ C and C++ APIs]. + No. There are several ways to incorporate non-Java code. HadoopStreaming permits any shell command to be used as a map or reduce function, and Hadoop is also developing [http://svn.apache.org/viewvc/lucene/hadoop/trunk/src/c%2B%2B/ C and C++ APIs] and a [http://www.swig.org/ SWIG]-compatible [http://issues.apache.org/jira/browse/HADOOP-234 pipes] API. == 5. How can I help to make Hadoop better? ==
