How to build Spark with my own version of Hadoop?

Hi, I have modified some Hadoop code, and want to build Spark with the modified version of Hadoop. Do I need to change the compilation dependency files? How to then? Great thanks!

Comparison between Standalone mode and YARN mode

Hi, I am very curious about the differences between Standalone mode and YARN mode. According to http://blog.cloudera.com/blog/2014/05/apache-spark-resource-management-and-yarn-app-models/, it seems that YARN mode is always better than Standalone mode. Is that the case? Or I should choose different