@Shivaram, That is a useful patch but I am bit afraid merge it in. Randomizing the executor has performance implications, especially for Spark Streaming. The non-randomized ordering of allocating machines to tasks was subtly helping to speed up certain window-based shuffle operations. For example, corresponding shuffle partitions in multiple shuffles using the same partitioner were likely to be co-located, that is, shuffle partition 0 were likely to be on the same machine for multiple shuffles. While this is the not a reliable mechanism to rely on, randomization may lead to performance degradation. So I am afraid to merge this one without understanding the consequences.
@Evan, I have already cut a release! You can submit the PR and we can merge it branch-0.9. If we have to cut another release, then we can include it. On Sun, Mar 23, 2014 at 11:42 PM, Evan Chan <e...@ooyala.com> wrote: > I also have a really minor fix for SPARK-1057 (upgrading fastutil), > could that also make it in? > > -Evan > > > On Sun, Mar 23, 2014 at 11:01 PM, Shivaram Venkataraman > <shiva...@eecs.berkeley.edu> wrote: > > Sorry this request is coming in a bit late, but would it be possible to > > backport SPARK-979[1] to branch-0.9 ? This is the patch for randomizing > > executor offers and I would like to use this in a release sooner rather > > than later. > > > > Thanks > > Shivaram > > > > [1] > > > https://github.com/apache/spark/commit/556c56689bbc32c6cec0d07b57bd3ec73ceb243e#diff-8ef3258646b0e6a4793d6ad99848eacd > > > > > > On Thu, Mar 20, 2014 at 10:18 PM, Bhaskar Dutta <bhas...@gmail.com> > wrote: > > > >> Thank You! We plan to test out 0.9.1 on YARN once it is out. > >> > >> Regards, > >> Bhaskar > >> > >> On Fri, Mar 21, 2014 at 12:42 AM, Tom Graves <tgraves...@yahoo.com> > wrote: > >> > >> > I'll pull [SPARK-1053] Should not require SPARK_YARN_APP_JAR when > running > >> > on YARN - JIRA and [SPARK-1051] On Yarn, executors don't doAs as > >> > submitting user - JIRA in. The pyspark one I would consider more of > an > >> > enhancement so might not be appropriate for a point release. > >> > > >> > > >> > [SPARK-1053] Should not require SPARK_YARN_APP_JAR when running on > YA... > >> > org.apache.spark.SparkException: env SPARK_YARN_APP_JAR is not set at > >> > > >> > org.apache.spark.scheduler.cluster.YarnClientSchedulerBackend.start(YarnClientSchedulerBackend.scala:49) > >> > at org.apache.spark.schedule... > >> > View on spark-project.atlassian.net Preview by Yahoo > >> > > >> > > >> > [SPARK-1051] On Yarn, executors don't doAs as submitting user - JIRA > >> > This means that they can't write/read from files that the yarn user > >> > doesn't have permissions to but the submitting user does. > >> > View on spark-project.atlassian.net Preview by Yahoo > >> > > >> > > >> > > >> > > >> > > >> > On Thursday, March 20, 2014 1:35 PM, Bhaskar Dutta <bhas...@gmail.com > > > >> > wrote: > >> > > >> > It will be great if > >> > "SPARK-1101<https://spark-project.atlassian.net/browse/SPARK-1101>: > >> > Umbrella > >> > for hardening Spark on YARN" can get into 0.9.1. > >> > > >> > Thanks, > >> > Bhaskar > >> > > >> > > >> > On Thu, Mar 20, 2014 at 5:37 AM, Tathagata Das > >> > <tathagata.das1...@gmail.com>wrote: > >> > > >> > > Hello everyone, > >> > > > >> > > Since the release of Spark 0.9, we have received a number of > important > >> > bug > >> > > fixes and we would like to make a bug-fix release of Spark 0.9.1. We > >> are > >> > > going to cut a release candidate soon and we would love it if people > >> test > >> > > it out. We have backported several bug fixes into the 0.9 and > updated > >> > JIRA > >> > > accordingly< > >> > > > >> > > >> > https://spark-project.atlassian.net/browse/SPARK-1275?jql=project%20in%20(SPARK%2C%20BLINKDB%2C%20MLI%2C%20MLLIB%2C%20SHARK%2C%20STREAMING%2C%20GRAPH%2C%20TACHYON)%20AND%20fixVersion%20%3D%200.9.1%20AND%20status%20in%20(Resolved%2C%20Closed) > >> > > >. > >> > > Please let me know if there are fixes that were not backported but > you > >> > > would like to see them in 0.9.1. > >> > > > >> > > Thanks! > >> > > > >> > > TD > >> > > > >> > > >> > > > > -- > -- > Evan Chan > Staff Engineer > e...@ooyala.com | >
