Fix NPE

zerolbsony · zerolbsony · commit 8c92be627d33 · 2025-12-19T19:21:18.000+08:00
diff --git a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/DataRegion.java b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/DataRegion.java
@@ -3039,7 +3039,8 @@ private void deleteDataInSealedFiles(Collection<TsFileResource> sealedTsFiles, M
     } else {
       TreeDeletionEntry entry = (TreeDeletionEntry) deletion;
       if (entry.getPathPattern() instanceof MeasurementPath) {
-        isDropTagExist = !((MeasurementPath) entry.getPathPattern()).getTagMap().isEmpty();
+        Map<String, String> tagMap = ((MeasurementPath) entry.getPathPattern()).getTagMap();
+        isDropTagExist = (tagMap != null) && !tagMap.isEmpty();
       }
     }
 

Original file line number	Diff line number	Diff line change
`@@ -3039,7 +3039,8 @@ private void deleteDataInSealedFiles(Collection<TsFileResource> sealedTsFiles, M`
`3039`	`3039`	`} else {`
`3040`	`3040`	`TreeDeletionEntry entry = (TreeDeletionEntry) deletion;`
`3041`	`3041`	`if (entry.getPathPattern() instanceof MeasurementPath) {`
`3042`		`- isDropTagExist = !((MeasurementPath) entry.getPathPattern()).getTagMap().isEmpty();`
	`3042`	`+ Map<String, String> tagMap = ((MeasurementPath) entry.getPathPattern()).getTagMap();`
	`3043`	`+ isDropTagExist = (tagMap != null) && !tagMap.isEmpty();`
`3043`	`3044`	`}`
`3044`	`3045`	`}`
`3045`	`3046`