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https://issues.apache.org/jira/browse/HDFS-16368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17841983#comment-17841983
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ASF GitHub Bot commented on HDFS-16368:
---------------------------------------
hfutatzhanghb commented on code in PR #3743:
URL: https://github.com/apache/hadoop/pull/3743#discussion_r1583039222
##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java:
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@@ -1281,6 +1282,57 @@ nodes with its data cleared (or user can just remove the
StorageID
}
}
+ /**
+ * refresh the network topology of this cluster based on the
mapping_topology.data file.
+ */
+ public void refreshTopology() throws IOException {
+ long start = System.currentTimeMillis();
Review Comment:
Sir, have fixed.
> DFSAdmin supports refresh topology info without restarting namenode
> --------------------------------------------------------------------
>
> Key: HDFS-16368
> URL: https://issues.apache.org/jira/browse/HDFS-16368
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: dfsadmin, namanode
> Affects Versions: 2.7.7, 3.3.1
> Reporter: farmmamba
> Assignee: farmmamba
> Priority: Major
> Labels: features, pull-request-available
> Attachments: 0001.patch
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Currently in HDFS, if we update the rack info for rack-awareness, we may need
> to rolling restart namenodes to let it be effective. If cluster is large, the
> cost time of rolling restart namenodes is very log. So, we develope a method
> to refresh topology info without rolling restart namenodes.
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