wujysh commented on a change in pull request #35: Fix sonar tianyu
URL: https://github.com/apache/incubator-iotdb/pull/35#discussion_r251740969
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File path: iotdb/src/main/java/org/apache/iotdb/db/metadata/MGraph.java
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@@ -46,7 +47,7 @@ public MGraph(String mtreeName) {
* Add a {@code PTree} to current {@code MGraph}.
*/
public void addAPTree(String ptreeRootName) throws
MetadataArgsErrorException {
- if (ptreeRootName.toLowerCase().equals("root")) {
+ if ("root".equalsIgnoreCase(ptreeRootName)) {
Review comment:
Use `MetadataConstant.ROOT` instead of "root".
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