[Known issue feature] Build Analysis can't do multi-line string matching

[agocke]

There have been a couple cases where I wanted/needed to match against multiple lines in the string log. It looks like Build Analysis does a regex match line-by-line, though, so this doesn't seem possible.

[AlitzelMendez]

Build analysis does not support multi-line string matching, mainly because of performance issues and the overload that this would cause for the build analysis service.

Build analysis processes thousands of log lines per build. The decision to start using regex was a difficult one for this reason, as can be seen in this conversation: #11209. After rolling out this change, we had to make some adjustments because we were having problems processing very long lines. So, even though we now support regex, we unfortunately do not have the capacity to support multi-line string matching.

Please let me know if you have more questions on this area. For now, I am closing this issue.