Hexiaoqiao commented on code in PR #6951:
URL: https://github.com/apache/hadoop/pull/6951#discussion_r1685299565
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java:
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@@ -8838,6 +8838,10 @@ private Supplier<String>
getLockReportInfoSupplier(String src, String dst,
UserGroupInformation ugi = Server.getRemoteUser();
String userName = ugi != null ? ugi.toString() : null;
InetAddress addr = Server.getRemoteIp();
+ if (addr != null) {
Review Comment:
@virajjasani Thanks for your works. But I am concerned if it will involve
more serious impact here because when hold lock for a long time and trigger
hostname resolution here which is one IO inner lock. Thanks again.
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