xiangmy21 commented on code in PR #17065:
URL: https://github.com/apache/iotdb/pull/17065#discussion_r2734536845
##########
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/schemaengine/schemaregion/mtree/impl/mem/MTreeBelowSGMemoryImpl.java:
##########
@@ -192,6 +193,22 @@ public synchronized boolean createSnapshot(final File
snapshotDir) {
return store.createSnapshot(snapshotDir);
}
+ private void applySubtreeMeasurementDelta(IMemMNode startNode, final long
delta) {
+ if (delta == 0 || startNode == null) {
+ return;
+ }
+ IMemMNode current = startNode;
+ while (current != null) {
+ current.setSubtreeMeasurementCount(current.getSubtreeMeasurementCount()
+ delta);
+ current = current.getParent();
+ }
+ }
+
+ private long getTemplateMeasurementCount(final int templateId) {
+ final Template template =
ClusterTemplateManager.getInstance().getTemplate(templateId);
+ return template == null ? 0L : template.getMeasurementNumber();
Review Comment:
Great catch! I fixed this issue in commit
[4027f97](https://github.com/apache/iotdb/pull/17065/commits/4027f9724ad417771b64eff82a53c90180a47297).
When a template is modified, the update is broadcast to the corresponding
SchemaRegion, and the subtree statistics are updated upward from the nodes
activated by the template in the MTree.
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