nandakumar131 commented on code in PR #8331:
URL: https://github.com/apache/ozone/pull/8331#discussion_r2100793795
##########
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/safemode/DataNodeSafeModeRule.java:
##########
@@ -66,7 +69,17 @@ protected boolean validate() {
if (validateBasedOnReportProcessing()) {
return registeredDns >= requiredDns;
}
- return nodeManager.getNodes(NodeStatus.inServiceHealthy()).size() >=
requiredDns;
+
+ int healthyCount =
nodeManager.getNodes(NodeStatus.inServiceHealthy()).size();
+ int healthyReadOnlyCount =
nodeManager.getNodes(NodeStatus.inServiceHealthyReadOnly()).size();
+ int staleCount = nodeManager.getNodes(NodeStatus.inServiceStale()).size();
+
+ if (healthyCount + healthyReadOnlyCount + staleCount == 1) {
+ LOG.warn("Only one Datanode is available in the cluster. " +
+ "Consider setting 'hdds.scm.safemode.min.datanode=1' in the
configuration.");
+ }
Review Comment:
We don't need any logging for this.
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