FYI, we reverted a commit in https://github.com/apache/spark/commit/55dbfbca37ce4c05f83180777ba3d4fe2d96a02e to fix the issue.

On Fri, Jan 12, 2018 at 11:45 AM, Xin Lu <xlu@salesforce.com> wrote:
seems like someone should investigate what caused the build time to go up an hour and if it's expected or not.  

On Thu, Jan 11, 2018 at 7:37 PM, Dongjoon Hyun <dongjoon.hyun@gmail.com> wrote:
Hi, All and Shane.

Can we increase the build time for `branch-2.3` during 2.3 RC period?

There are two known test issues, but the Jenkins on branch-2.3 with hadoop-2.7 fails with build timeout. So, it's difficult to monitor whether the branch is healthy or not.