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[YARN-8925] Updating distributed node attributes only when necessary - YARN - [issue]
...Currently if distributed node attributes exist, even though there is no change, updating for distributed node attributes will happen in every heartbeat between NM and RM. Updating process wi...
http://issues.apache.org/jira/browse/YARN-8925    Author: Tao Yang , 2018-12-11, 15:54
[YARN-9050] Usability improvements for scheduler activities - YARN - [issue]
...We have did some usability improvements for scheduler activities based on YARN3.1 in our cluster as follows:1. Not available for multi-thread asynchronous scheduling. App and node activites ...
http://issues.apache.org/jira/browse/YARN-9050    Author: Tao Yang , 2018-12-05, 15:56
[YARN-9043] Inter-queue preemption sometimes starves an underserved queue when using DominantResourceCalculator - YARN - [issue]
...To reproduce this problem in UT, we can setup a cluster with resource <40,18> and create 3 queues and apps: queue a: guaranteed=<10,10>, used=<6,10> by app1 queue b: guaran...
http://issues.apache.org/jira/browse/YARN-9043    Author: Tao Yang , 2018-11-23, 05:28
[YARN-9007] CS preemption monitor should only select GUARANTEED containers as candidates for queue and reserved container preemption - YARN - [issue]
...Currently CS preemption monitor doesn't consider execution type of containers, so OPPORTUNISTIC containers maybe selected and killed without effect.In some scenario with OPPORTUNISTIC contai...
http://issues.apache.org/jira/browse/YARN-9007    Author: Tao Yang , 2018-11-21, 03:38
[YARN-5683] Support specifying storage type for per-application local dirs - YARN - [issue]
...Introduction Some applications of various frameworks (Flink, Spark and MapReduce etc) using local storage (checkpoint, shuffle etc) might require high IO performance. It's useful to allocate...
http://issues.apache.org/jira/browse/YARN-5683    Author: Tao Yang , 2018-11-17, 03:30
[YARN-7461] DominantResourceCalculator#ratio calculation problem when right resource contains zero value - YARN - [issue]
...Currently DominantResourceCalculator#ratio may return wrong result when right resource contains zero value. For example, there are three resource types such as <memory-mb, vcores, vssd>...
http://issues.apache.org/jira/browse/YARN-7461    Author: Tao Yang , 2018-11-17, 03:22
[YARN-8958] Schedulable entities leak in fair ordering policy when recovering containers between remove app attempt and remove app - YARN - [issue]
...We found a NPE in ClientRMService#getApplications when querying apps with specified queue. The cause is that there is one app which can't be found by calling RMContextImpl#getRMApps(is finis...
http://issues.apache.org/jira/browse/YARN-8958    Author: Tao Yang , 2018-11-16, 08:11
[YARN-8917] Absolute (maximum) capacity of level3+ queues is wrongly calculated for absolute resource - YARN - [issue]
...Absolute capacity should be equal to multiply capacity by parent-queue's absolute-capacity,but currently it's calculated as dividing capacity by parent-queue's absolute-capacity.Calculation ...
http://issues.apache.org/jira/browse/YARN-8917    Author: Tao Yang , 2018-11-15, 02:28
[YARN-8233] NPE in CapacityScheduler#tryCommit when handling allocate/reserve proposal whose allocatedOrReservedContainer is null - YARN - [issue]
...Recently we saw a NPE problem in CapacityScheduler#tryCommit when try to find the attemptId by calling c.getAllocatedOrReservedContainer().get... from an allocate/reserve proposal. But got n...
http://issues.apache.org/jira/browse/YARN-8233    Author: Tao Yang , 2018-11-10, 12:54
[YARN-8505] AMLimit and userAMLimit check should be skipped for unmanaged AM - YARN - [issue]
...AMLimit and userAMLimit check in LeafQueue#activateApplications should be skipped for unmanaged AM whose resource is not taken from YARN cluster....
http://issues.apache.org/jira/browse/YARN-8505    Author: Tao Yang , 2018-11-10, 12:04