GitHub user angoenka opened a pull request: https://github.com/apache/beam/pull/4094
[BEAM-3150] Fix threading for progress reporting in SDKHarness Follow this checklist to help us incorporate your contribution quickly and easily: - [ ] Make sure there is a [JIRA issue](https://issues.apache.org/jira/projects/BEAM/issues/) filed for the change (usually before you start working on it). Trivial changes like typos do not require a JIRA issue. Your pull request should address just this issue, without pulling in other changes. - [ ] Each commit in the pull request should have a meaningful subject line and body. - [ ] Format the pull request title like `[BEAM-XXX] Fixes bug in ApproximateQuantiles`, where you replace `BEAM-XXX` with the appropriate JIRA issue. - [ ] Write a pull request description that is detailed enough to understand what the pull request does, how, and why. - [ ] Run `mvn clean verify` to make sure basic checks pass. A more thorough check will be performed on your pull request automatically. - [ ] If this contribution is large, please file an Apache [Individual Contributor License Agreement](https://www.apache.org/licenses/icla.pdf). --- Progress reporting should happen on a separate thread than worker thread to avoid delay in reporting progress. You can merge this pull request into a Git repository by running: $ git pull https://github.com/angoenka/beam progress_report_thread_bug_fix Alternatively you can review and apply these changes as the patch at: https://github.com/apache/beam/pull/4094.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #4094 ---- commit b25e5f362bb5ebe17dfd48bcbd11c2ae6c932245 Author: Ankur Goenka <goe...@goenka.svl.corp.google.com> Date: 2017-11-07T22:02:29Z [BEAM-3150] Fix threading for progress reporting in SDKHarness ---- ---