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https://issues.apache.org/jira/browse/APEXCORE-10?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15230839#comment-15230839
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ASF GitHub Bot commented on APEXCORE-10:
----------------------------------------
Github user tweise commented on a diff in the pull request:
https://github.com/apache/incubator-apex-core/pull/250#discussion_r58926771
--- Diff:
engine/src/main/java/com/datatorrent/stram/plan/physical/PhysicalPlan.java ---
@@ -357,25 +417,51 @@ public PhysicalPlan(LogicalPlan dag, PlanContext ctx)
{
if (!container.operators.isEmpty()) {
LOG.warn("Operator {} shares container without locality
contraint due to insufficient resources.", oper);
}
+ // TODO: Check if PT Operators conflict in anti-affinity, Pick
the first container that does not conflict
--- End diff --
Why would this happen here and not during logical plan validation?
> Enable non-affinity of operators per node (not containers)
> ----------------------------------------------------------
>
> Key: APEXCORE-10
> URL: https://issues.apache.org/jira/browse/APEXCORE-10
> Project: Apache Apex Core
> Issue Type: Task
> Reporter: Amol Kekre
> Assignee: Isha Arkatkar
> Labels: roadmap
>
> The issue happens on cloud which provides virtual cores with software like
> Xen underneath. In effect if CPU intensive operators land up on same node we
> have a resource bottleneck,
> Need to create an attribute that does the following
> - Operators A & B should not be on same node
> - Stram should use this attribute to try to get containers on different node
> It is understood that the user is making an explicit choice to use NIC
> instead of stream local optimization
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