Email: liuml07 AT apache DOT org
Github: @liuml07
Twitter: @liuml07
Instagram: @liuml07
LinkedIn: @liuml07


  • Opinions in the artiles here are my own and not the views of my employer.
  • The contents are based on experience and superstition, rather than understanding and insight.
  • Contains controversial information that may drive the reader insane.

Reading posts at this site implies recognition of these facts and that the reader, their estate and their heirs accept all risk and liability. The author is not responsible if anything happens to their Hadoop cluster, including all the data stored in HDFS disappearing into an unknown dimension, or the YARN scheduler starting to summon pre-human deities.

You have been warned.