I saw in the link below that the character limit for Actions has been expanded from 50 to 128.
Does CDH 5.7 have this newer version of Oozie that allows 128 character names for Actions?
As gezapeti suggests the patch is contained by CDH5.7.0+
If you are interested, you can also look it up at Cloudera's Oozie repository, https://github.com/cloudera/oozie .
Here, switch to branch 'cdh5-4.1.0_5.7.0' and click commits. You can find the patch in commit commit 830171c6514aad2e20ad6d0bf629a2cc6ba30b6c: