From 46baafedf13446f5c1b973d667f437bf7158d3c2 Mon Sep 17 00:00:00 2001 From: Wangda Tan Date: Thu, 18 Oct 2018 10:58:21 -0700 Subject: [PATCH] YARN-8896. Limit the maximum number of container assignments per heartbeat. (Zhankun Tang via wangda) Change-Id: I6e72f8362bd7f5c2a844cb9e3c4732492314e9f1 (cherry picked from commit 780be14f07df2a3ed6273b96ae857c278fd72718) --- .../scheduler/capacity/CapacitySchedulerConfiguration.java | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java index 5c9904b23ca..547d1319100 100644 --- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java +++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java @@ -333,8 +333,11 @@ public class CapacitySchedulerConfiguration extends ReservationSchedulerConfigur public static final String MAX_ASSIGN_PER_HEARTBEAT = PREFIX + "per-node-heartbeat.maximum-container-assignments"; + /** + * Avoid potential risk that greedy assign multiple may involve + * */ @Private - public static final int DEFAULT_MAX_ASSIGN_PER_HEARTBEAT = -1; + public static final int DEFAULT_MAX_ASSIGN_PER_HEARTBEAT = 100; /** Configuring absolute min/max resources in a queue. **/ @Private