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Xianyin Xin commented on YARN-3409: ----------------------------------- Thanks for comments, [~grey]. IMO, topology may be hard to deal with node labels, as node labels describe the attributes of a node and topology is an attribute of the whole cluster. You remind me that YARN-1042 may not be as simple as i think. And expecting your design doc, [~leftnoteasy]. > Add constraint node labels > -------------------------- > > Key: YARN-3409 > URL: https://issues.apache.org/jira/browse/YARN-3409 > Project: Hadoop YARN > Issue Type: Sub-task > Components: api, capacityscheduler, client > Reporter: Wangda Tan > Assignee: Wangda Tan > > Specify only one label for each node (IAW, partition a cluster) is a way to > determinate how resources of a special set of nodes could be shared by a > group of entities (like teams, departments, etc.). Partitions of a cluster > has following characteristics: > - Cluster divided to several disjoint sub clusters. > - ACL/priority can apply on partition (Only market team / marke team has > priority to use the partition). > - Percentage of capacities can apply on partition (Market team has 40% > minimum capacity and Dev team has 60% of minimum capacity of the partition). > Constraints are orthogonal to partition, they’re describing attributes of > node’s hardware/software just for affinity. Some example of constraints: > - glibc version > - JDK version > - Type of CPU (x86_64/i686) > - Type of OS (windows, linux, etc.) > With this, application can be able to ask for resource has (glibc.version >= > 2.20 && JDK.version >= 8u20 && x86_64). -- This message was sent by Atlassian JIRA (v6.3.4#6332)