@Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;

    Instance instance = (Instance) o;

    return !(details != null   ? !details.equals(instance.details)     : instance.details != null) &&
           !(endTime != null   ? !endTime.equals(instance.endTime)     : instance.endTime != null) &&
           !(feedName != null  ? !feedName.equals(instance.feedName)   : instance.feedName != null) &&
           !(id != null        ? !id.equals(instance.id)               : instance.id != null) &&
           !(log != null       ? !log.equals(instance.log)             : instance.log != null) &&
           !(startTime != null ? !startTime.equals(instance.startTime) : instance.startTime != null) &&
           !(status != null    ? !status.equals(instance.status)       : instance.status != null);
  }
Get the log.

@return the log
ambari-server/src/main/java/org/apache/ambari/server/controller/ivory/Instance.java