Github user dragos commented on a diff in the pull request:
https://github.com/apache/spark/pull/4984#discussion_r33719412
--- Diff:
network/shuffle/src/main/java/org/apache/spark/network/shuffle/ExternalShuffleClient.java
---
@@ -138,6 +139,26 @@ public void registerWithShuffleServer(
client.sendRpcSync(registerMessage, 5000 /* timeoutMs */);
}
+ /**
+ * Removes this application from the external shuffle server and
optionally deletes local
+ * files.
+ *
+ * @param host Host of the shuffle server.
+ * @param port Port of the shuffle server.
+ * @param cleanupLocalDirs True if corresponding shuffle files should be
deleted
+ * @throws IOException
+ */
+ public void applicationRemoved(String host,
+ int port,
--- End diff --
Note that other (all?) methods in this class take a host and a port. This
is not a callback. This is a client wrapper for connecting to the
ExternalShuffleClient. They can be on any executor. How would you tell the
client where to connect to?
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