Hey all, some of you may have seen some kind of OutOfMemoryError in your Hadoop jobs, which looks like this: java.lang.OutOfMemoryError: unable to create new native thread at java.lang.Thread.start0(Native Method) at java.lang.Thread.start(Thread.java:597) This is mainly what is the theme of today's blog post. I'll be writing about what causes this to happen and how to solve it. As it is currently