[HBASE-18180] Possible connection leak while closing BufferedMutator in TableOutputFormat

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.0, 1.3.1, 1.3.2
• Fix Version/s: 1.4.0, 1.3.2, 2.0.0-alpha-2, 2.0.0
• Component/s: mapreduce
• Hadoop Flags: Reviewed
• Assignee: Pankaj Kumar
• Reporter: Pankaj Kumar
• Created: 07/Jun/17 02:54
• Updated: 01/Aug/18 06:21
• Resolved: 19/Jun/17 13:40

Description

In TableOutputFormat, connection will not be released in case when "mutator.close()" throws exception.

org.apache.hadoop.hbase.mapreduce.TableOutputFormat

    public void close(TaskAttemptContext context)
    throws IOException {
      mutator.close();
      connection.close();
    }

org.apache.hadoop.hbase.mapred.TableOutputFormat

    public void close(Reporter reporter) throws IOException {
      this.m_mutator.close();
      if (connection != null) {
        connection.close();
        connection = null;
      }
    }