GitHub user ryan-williams opened a pull request: https://github.com/apache/spark/pull/3524
fix spillable memory acquisition request comment says we should request enough memory to potentially double our memory-pool footprint, but the code was actually requesting more than that: currentMemory >= myMemoryThreshold (L66) implies 2*currentMemory - myMemoryThreshold >= currentMemory (strict inequality in the former implies it in the latter, as well). We were effectively trying to bump our memory footprint to: 3*currentMemory - myMemoryThreshold Iâm assuming that the comment reflects the true intent, not that it was mistaken and we actually want (3*cM - mMT). You can merge this pull request into a Git repository by running: $ git pull https://github.com/ryan-williams/spark spills Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/3524.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 #3524 ---- commit b5d8ec93c4ad222bdc8cea84e69ff513948a307e Author: Ryan Williams <ryan.blake.willi...@gmail.com> Date: 2014-11-13T06:55:02Z fix spillable memory acquisition request comment says we should request enough memory to potentially double our memory-pool footprint, but the code was actually requesting more than that: currentMemory >= myMemoryThreshold (L66) implies 2*currentMemory - myMemoryThreshold >= currentMemory (strict inequality in the former implies it in the latter, as well). We were effectively trying to bump our memory footprint to: 3*currentMemory - myMemoryThreshold Iâm assuming that the comment reflects the true intent, not that it was mistaken and we actually want (3*cM - mMT). ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org