Ngone51 commented on a change in pull request #33034:
URL: https://github.com/apache/spark/pull/33034#discussion_r662003768
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File path:
common/network-common/src/main/java/org/apache/spark/network/client/TransportClient.java
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@@ -222,7 +223,7 @@ public void sendMergedBlockMetaReq(
handler.addRpcRequest(requestId, callback);
RpcChannelListener listener = new RpcChannelListener(requestId, callback);
channel.writeAndFlush(
- new MergedBlockMetaRequest(requestId, appId, shuffleId,
reduceId)).addListener(listener);
+ new MergedBlockMetaRequest(requestId, appId, shuffleId,
shuffleSequenceId, reduceId)).addListener(listener);
Review comment:
> With this throughout the lifecycle of the application, we will keep
track of the latest shuffleId -> shuffleSequenceId mapping, this way we can
reject the push/fetch requests made for a older shuffleSequenceId for a
shuffled.
To confirm, this's actually a variant of option 1, right?
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