http://extjs.com/deploy/ext-2.2.zip is not longer available.
This is an issue that affects HDP 2.2 installs (among others)
Note: The website itself is gone. Redirects point to a new site, and the following file works (oozie install):
This is documented in the following JIRA and Oozie has been patched accordingly to work with both versions of the file:
Action item: We need to update the hadoop cookbook to point to the new extjs 2.3.0 zip file (and update the spec test).