[GitHub] [iotdb] mychaow commented on a change in pull request #3292: [IOTDB-1407] Filtering time series based on tags query fails Occasion…

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mychaow commented on a change in pull request #3292:
URL: https://github.com/apache/iotdb/pull/3292#discussion_r642272498



##########
File path: cluster/src/main/java/org/apache/iotdb/cluster/metadata/CMManager.java
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@@ -1690,7 +1690,15 @@ public MNode getMNode(MNode deviceMNode, String measurementName) {
     ExecutorService pool =
         new ThreadPoolExecutor(
             THREAD_POOL_SIZE, THREAD_POOL_SIZE, 0, TimeUnit.SECONDS, new LinkedBlockingDeque<>());
-    List<PartitionGroup> globalGroups = metaGroupMember.getPartitionTable().getGlobalGroups();
+
+    List<PartitionGroup> globalGroups = new ArrayList<>();
+    if (IoTDBConstant.PATH_ROOT.equals(plan.getPath().getFullPath())) {
+      globalGroups = metaGroupMember.getPartitionTable().getGlobalGroups();
+    } else {
+      PartitionGroup partitionGroup =
+          metaGroupMember.getPartitionTable().partitionByPathTime(plan.getPath(), 0);

Review comment:
       show timeseries root.* is not right?




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