[GitHub] qiuchenjian commented on a change in pull request #3104: [HOTFIX] Fix select query on varchar column with large data fails with jvm crash

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qiuchenjian commented on a change in pull request #3104: [HOTFIX] Fix select query on varchar column with large data fails with jvm crash
URL: https://github.com/apache/carbondata/pull/3104#discussion_r250954033
 
 

 ##########
 File path: core/src/main/java/org/apache/carbondata/core/datastore/ReusableDataBuffer.java
 ##########
 @@ -47,7 +47,8 @@
    */
   public byte[] getDataBuffer(int requestedSize) {
     if (dataBuffer == null || requestedSize > size) {
-      this.size = requestedSize + ((requestedSize * 30) / 100);
+      this.size = requestedSize + ((requestedSize / 100) * 30);
 
 Review comment:
   ```suggestion
         requestedSize = requestedSize + ((requestedSize / 100) * 30);
   ```
   There is a problem with origin formula
   this.size = requestedSize + ((requestedSize / 100) * 30);
   this.size = requestedSize > this.size ? requestedSize : this.size;
   this.size has changed, is unuseless to compare size and resuestedSize

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