Repository: spark Updated Branches: refs/heads/master 1a88f20de -> fe3740c4c
[SPARK-5636] Ramp up faster in dynamic allocation A recent patch #4051 made the initial number default to 0. With this change, any Spark application using dynamic allocation's default settings will ramp up very slowly. Since we never request more executors than needed to saturate the pending tasks, it is safe to ramp up quickly. The current default of 60 may be too slow. Author: Andrew Or <and...@databricks.com> Closes #4409 from andrewor14/dynamic-allocation-interval and squashes the following commits: d3cc485 [Andrew Or] Lower request interval Project: http://git-wip-us.apache.org/repos/asf/spark/repo Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/fe3740c4 Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/fe3740c4 Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/fe3740c4 Branch: refs/heads/master Commit: fe3740c4c859d087b714c666741a29061bba5f58 Parents: 1a88f20 Author: Andrew Or <and...@databricks.com> Authored: Fri Feb 6 10:54:23 2015 -0800 Committer: Andrew Or <and...@databricks.com> Committed: Fri Feb 6 10:55:13 2015 -0800 ---------------------------------------------------------------------- .../scala/org/apache/spark/ExecutorAllocationManager.scala | 6 +++--- docs/configuration.md | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/spark/blob/fe3740c4/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala ---------------------------------------------------------------------- diff --git a/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala b/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala index 5d5288b..8b38366 100644 --- a/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala +++ b/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala @@ -76,15 +76,15 @@ private[spark] class ExecutorAllocationManager( private val maxNumExecutors = conf.getInt("spark.dynamicAllocation.maxExecutors", Integer.MAX_VALUE) - // How long there must be backlogged tasks for before an addition is triggered + // How long there must be backlogged tasks for before an addition is triggered (seconds) private val schedulerBacklogTimeout = conf.getLong( - "spark.dynamicAllocation.schedulerBacklogTimeout", 60) + "spark.dynamicAllocation.schedulerBacklogTimeout", 5) // Same as above, but used only after `schedulerBacklogTimeout` is exceeded private val sustainedSchedulerBacklogTimeout = conf.getLong( "spark.dynamicAllocation.sustainedSchedulerBacklogTimeout", schedulerBacklogTimeout) - // How long an executor must be idle for before it is removed + // How long an executor must be idle for before it is removed (seconds) private val executorIdleTimeout = conf.getLong( "spark.dynamicAllocation.executorIdleTimeout", 600) http://git-wip-us.apache.org/repos/asf/spark/blob/fe3740c4/docs/configuration.md ---------------------------------------------------------------------- diff --git a/docs/configuration.md b/docs/configuration.md index 4c86cb7..00e973c 100644 --- a/docs/configuration.md +++ b/docs/configuration.md @@ -1140,7 +1140,7 @@ Apart from these, the following properties are also available, and may be useful </tr> <tr> <td><code>spark.dynamicAllocation.schedulerBacklogTimeout</code></td> - <td>60</td> + <td>5</td> <td> If dynamic allocation is enabled and there have been pending tasks backlogged for more than this duration (in seconds), new executors will be requested. For more detail, see this --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@spark.apache.org For additional commands, e-mail: commits-h...@spark.apache.org
