Yuhao questions

• Lucene scoring: in what context is queryNorm used?
• Hadoop: cannot set default FileSystem as HDFS in core-site.xml
• Why Lucene uses maxDoc instead of numDocs to compute term idf?
• What are the connections and differences between Hadoop Writable and java.io.serialization?
• Chaining Multi-Reducers in a Hadoop MapReduce job
• GWT: how to pass java array into javascript native method?

Yuhao answers