[iotdb] 01/01: Use String.intern() in TsFileResource

[haonan]

This is an automated email from the ASF dual-hosted git repository.

haonan pushed a commit to branch ResourceIntern12
in repository https://gitbox.apache.org/repos/asf/iotdb.git

commit 45658ab0bfb9102fbe91fa0989c2fc836df14de5
Author: HTHou <hhao...@outlook.com>
AuthorDate: Tue Jul 6 11:27:11 2021 +0800

    Use String.intern() in TsFileResource
---
 .../java/org/apache/iotdb/db/engine/storagegroup/TsFileResource.java  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git 
a/server/src/main/java/org/apache/iotdb/db/engine/storagegroup/TsFileResource.java
 
b/server/src/main/java/org/apache/iotdb/db/engine/storagegroup/TsFileResource.java
index 16cdb54..c42e9d3 100644
--- 
a/server/src/main/java/org/apache/iotdb/db/engine/storagegroup/TsFileResource.java
+++ 
b/server/src/main/java/org/apache/iotdb/db/engine/storagegroup/TsFileResource.java
@@ -315,20 +315,24 @@ public class TsFileResource {
   }
 
   public void updateStartTime(String device, long time) {
+    device = device.intern();
     timeIndex.updateStartTime(device, time);
   }
 
   // used in merge, refresh all start time
   public void putStartTime(String device, long time) {
+    device = device.intern();
     timeIndex.putStartTime(device, time);
   }
 
   public void updateEndTime(String device, long time) {
+    device = device.intern();
     timeIndex.updateEndTime(device, time);
   }
 
   // used in merge, refresh all end time
   public void putEndTime(String device, long time) {
+    device = device.intern();
     timeIndex.putEndTime(device, time);
   }