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https://issues.apache.org/jira/browse/HDFS-17068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17741236#comment-17741236
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ASF GitHub Bot commented on HDFS-17068:
---------------------------------------
xinglin commented on code in PR #5809:
URL: https://github.com/apache/hadoop/pull/5809#discussion_r1256899902
##########
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/extdataset/ExternalDatasetImpl.java:
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@@ -477,4 +482,7 @@ public MountVolumeMap getMountVolumeMap() {
public List<FsVolumeImpl> getVolumeList() {
return null;
}
+
+ @Override
+ public void setLastDirScannerFinishTime(long time) {}
Review Comment:
Is there a reason that in one test case, we throw an unsupported exception
while in this test class, it is a no-op? can we make both behave the same way?
> Datanode should record last directory scan time.
> ------------------------------------------------
>
> Key: HDFS-17068
> URL: https://issues.apache.org/jira/browse/HDFS-17068
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: farmmamba
> Assignee: farmmamba
> Priority: Minor
> Labels: pull-request-available
>
> I think it is useful for us to record last directory scan time for one
> datanode.
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