public void validate() throws org.apache.thrift.TException {
    // check for required fields
    // alas, we cannot check 'startTime' because it's a primitive and you chose the non-beans generator.
    // alas, we cannot check 'processingTime' because it's a primitive and you chose the non-beans generator.
    // alas, we cannot check 'queueTime' because it's a primitive and you chose the non-beans generator.
    // alas, we cannot check 'responseSize' because it's a primitive and you chose the non-beans generator.
    if (clientAddress == null) {
      throw new org.apache.thrift.protocol.TProtocolException("Required field 'clientAddress' was not present! Struct: " + toString());
    }
    if (serverClass == null) {
      throw new org.apache.thrift.protocol.TProtocolException("Required field 'serverClass' was not present! Struct: " + toString());
    }
    if (methodName == null) {
      throw new org.apache.thrift.protocol.TProtocolException("Required field 'methodName' was not present! Struct: " + toString());
    }
    if (callDetails == null) {
      throw new org.apache.thrift.protocol.TProtocolException("Required field 'callDetails' was not present! Struct: " + toString());
    }
    if (param == null) {
      throw new org.apache.thrift.protocol.TProtocolException("Required field 'param' was not present! Struct: " + toString());
    }
    if (userName == null) {
      throw new org.apache.thrift.protocol.TProtocolException("Required field 'userName' was not present! Struct: " + toString());
    }
    // alas, we cannot check 'multiGetsCount' because it's a primitive and you chose the non-beans generator.
    // alas, we cannot check 'multiMutationsCount' because it's a primitive and you chose the non-beans generator.
    // alas, we cannot check 'multiServiceCalls' because it's a primitive and you chose the non-beans generator.
    // check for sub-struct validity
  }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/generated/TOnlineLogRecord.java