ChenSammi commented on a change in pull request #2246:
URL: https://github.com/apache/ozone/pull/2246#discussion_r633490167
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File path:
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/SCMCommonPlacementPolicy.java
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@@ -165,9 +166,15 @@ public ConfigurationSource getConf() {
*/
public boolean hasEnoughSpace(DatanodeDetails datanodeDetails,
long sizeRequired) {
- SCMNodeMetric nodeMetric = nodeManager.getNodeStat(datanodeDetails);
- return (nodeMetric != null) && (nodeMetric.get() != null)
- && nodeMetric.get().getRemaining().hasResources(sizeRequired);
+ if (datanodeDetails instanceof DatanodeInfo) {
+ DatanodeInfo datanodeInfo = (DatanodeInfo) datanodeDetails;
+ for (StorageReportProto reportProto : datanodeInfo.getStorageReports()) {
+ if (reportProto.getRemaining() > sizeRequired) {
+ return true;
+ }
+ }
+ }
+ return false;
Review comment:
I think we need to distinguish two "false" cases here, one is
datanodeDetails is not a DatanodeInfo, another is this DN doesn't have enough
space. The latter case is normal, but the formal case indidates that current
solution is not perfect. It would be better if there is a WARN log so that we
can find the issue quickly.
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