[HBASE-16969] RegionCoprocessorServiceExec should override the toString() for debugging

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.3.0, 2.0.0
• Fix Version/s: 1.4.0, 2.0.0
• Assignee: Chia-Ping Tsai
• Reporter: Chia-Ping Tsai
• Created: 29/Oct/16 11:41
• Updated: 05/Apr/17 23:19
• Resolved: 05/Apr/17 23:19

Description

The toString() method is used to log in BatchErrors#makeException.

BatchErrors.java

synchronized RetriesExhaustedWithDetailsException makeException(boolean logDetails) {
  if (logDetails) {LOG.error("Exception occurred! Exception details: " + throwables + ";\nActions: " + actions);
 }

If RegionCoprocessorServiceExec doesn’t override the toString(), we will see the hash code in the log message. That message is useless for debugging.