[HDFS-11054] Suppress verbose log message in BlockPlacementPolicyDefault

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha2
• Hadoop Flags: Reviewed
• Assignee: Chen Liang
• Reporter: Arpit Agarwal
• Created: 25/Oct/16 21:50
• Updated: 26/Oct/16 03:20
• Resolved: 26/Oct/16 02:56

Description

We saw an instance where this log message was generated millions of times in a short time interval, slowing the NameNode to a crawl. It can probably be changed to log at DEBUG level instead.

      if (cur == null) {
        LOG.warn("No excess replica can be found. excessTypes: "+excessTypes+
            ". moreThanOne: "+moreThanOne+". exactlyOne: "+exactlyOne+".");
        break;
      }