goiri commented on code in PR #4362:
URL: https://github.com/apache/hadoop/pull/4362#discussion_r883871623
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java:
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@@ -2061,12 +2060,7 @@ public DatanodeInfo[] load(DatanodeReportType type)
throws Exception {
public ListenableFuture<DatanodeInfo[]> reload(
final DatanodeReportType type, DatanodeInfo[] oldValue)
throws Exception {
- return executorService.submit(new Callable<DatanodeInfo[]>() {
- @Override
- public DatanodeInfo[] call() throws Exception {
- return load(type);
- }
- });
+ return executorService.submit(() -> load(type));
Review Comment:
One of the reasons to not use this syntax was to keep some backwards
compatibility with branch-2.
I guess that's long gone so let's go ahead.
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