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Wangda Tan commented on YARN-3409: ---------------------------------- And, bq. do you mean having an extra affinity/anti-affinity constraint expression or use the same constraint expression? Probably we will need a separate one. I would prefer to use the same one, this is why I suggest to name the field to "placementStrategy" instead of "constraintExpression". To me YARN-4902 is the goal, we should align new changes to RequestRequest to the new proposal. So example of how to specify anti-affinity and constraint may look like: {code} # Run on node with JDK5 or JDK6, and anti-affinity to itself's container placement-strategy = (JDK5 || JDK6) && anti-affinity-to <my-application> # Run on node with CENTOS6 and SSD, and affinity-to application-2 placement-strategy = CENTOS6 && SSD && affinity-to application_3333_0002 {code} Please share your thoughts on this. > 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: Naganarasimha G R > Attachments: Constraint-Node-Labels-Requirements-Design-doc_v1.pdf, > YARN-3409.WIP.001.patch > > > 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) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org