[HIVE-15225] QueryPlan.getJSONValue should code against empty string values

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Assignee: Yibing Shi
• Reporter: Yibing Shi
• Created: 16/Nov/16 23:04
• Updated: 08/Aug/17 11:52

Description

The current QueryPlan.getJSONValue implementation is as below:

  public String getJSONValue(Object value) {
    String v = "null";
    if (value != null) {
      v = value.toString();
      if (v.charAt(0) != '[' && v.charAt(0) != '{') {
        v = "\"" + v + "\"";
      }
    }
    return v;
  }

When value.toString() returns an empty string, a StringIndexOutOfRangeException would be thrown out when "v.charAt(0)" is evaluated.