nwangtw commented on a change in pull request #2891: Refactor StatefulStorage
API
URL: https://github.com/apache/incubator-heron/pull/2891#discussion_r187482648
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File path: heron/proto/ckptmgr.proto
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@@ -195,6 +218,9 @@ message SaveInstanceStateRequest {
// Information about the instance whose state this is
required heron.proto.system.Instance instance = 1;
required InstanceStateCheckpoint checkpoint = 2;
+ // Stmgrs need to send component metadata so that Checkpoint
+ // Mgrs know how to repartition if needed.
+ optional CheckpointComponentMetadata metadata = 3;
Review comment:
yeah. this info will be passed to ckptmgr, so that it knows if repartition
is needed and how to repartition.
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