vjagadish1989 commented on a change in pull request #903: SEP-19: Allocator
changes for standby-aware container allocation, and active container failover
URL: https://github.com/apache/samza/pull/903#discussion_r256070415
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File path:
samza-core/src/main/java/org/apache/samza/clustermanager/HostAwareContainerAllocator.java
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@@ -45,10 +53,22 @@
*/
private final int requestTimeout;
+ // Map of activeContainerIDs to its corresponding standby containers, and
standbyContainerIDs to its corresponding
+ // active container and other corresponding standbyContainers
+ private final Map<String, List<String>> standbyContainerConstraints = new
HashMap<>();
Review comment:
This map is un-necessary because it appears to be conflating too many roles..
You can simplify / consolidate state in a single class with the following
APIs:
- List\<SamzaResource\> getStandbyContainers(activeResourceId)
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