KeeProMise commented on code in PR #6697:
URL: https://github.com/apache/hadoop/pull/6697#discussion_r1558805351
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hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java:
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@@ -1090,7 +1090,7 @@ DatanodeInfo[] getCachedDatanodeReport(DatanodeReportType
type)
throws IOException {
try {
DatanodeInfo[] dns = this.dnCache.get(type);
- if (dns == null) {
+ if (dns.length == 0) {
Review Comment:
@simbadzina
<img width="811" alt="截屏2024-04-10 11 55 47"
src="https://github.com/apache/hadoop/assets/38941777/d91a9e69-14a6-44ac-b983-65364ae4dd8c";>
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