virajjasani commented on code in PR #4107:
URL: https://github.com/apache/hadoop/pull/4107#discussion_r859429956
##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java:
##########
@@ -632,6 +638,20 @@ private static void
printDataNodeReports(DistributedFileSystem dfs,
}
}
+ private static void printSlowDataNodeReports(DistributedFileSystem dfs,
boolean listNodes,
Review Comment:
> I suspect you would need some kind of header to distinguish from the other
data node reports.
This is called only if condition `listAll || listSlowNodes` is true:
```
if (listAll || listSlowNodes) {
printSlowDataNodeReports(dfs, listSlowNodes, "Slow");
}
```
Sample output:
Header:
```
-------------------------------------------------
Slow datanodes (n):
```
<img width="524" alt="Screenshot 2022-03-25 at 9 12 58 PM"
src="https://user-images.githubusercontent.com/34790606/165455352-303eb506-0a5f-491d-ac44-bcc243a8f0f6.png";>
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