I took a look at the commit messages in git log -- it looks like the individual commit messages are not that useful to include, but do make the commit messages more verbose. They are usually just a bunch of extremely concise descriptions of "bug fixes", "merges", etc:
cb3f12d [xxx] add whitespace 6d874a6 [xxx] support pyspark for yarn-client 89b01f5 [yyy] Update the unit test to add more cases 275d252 [yyy] Address the comments 7cc146d [yyy] Address the comments 2624723 [yyy] Fix rebase conflict 45befaa [yyy] Update the unit test bbc1c9c [yyy] Fix checkpointing doesn't retain driver port issue Anybody against removing those from the merge script so the log looks cleaner? If nobody feels strongly about this, we can just create a JIRA to remove them, and only keep the author names.