Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/incubator-flink/pull/158#discussion_r19032889
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/instance/InstanceConnectionInfo.java
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@@ -25,7 +25,10 @@
import org.apache.flink.core.io.IOReadableWritable;
--- End diff --
Eager computation of the FQDN (in the constructor) on the taskmanager would
be a good idea. Otherwise, in corner cases, reverse name lookup falls to the
jobmanager (which might get overloaded doing too many reverse lookups).
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