任何人都可以帮助我使用Hadoop PIG脚本吗？基本上，我要做的是填补缺失的年份来填写每年的数据。我不知道如何正确填补失踪的岁月。 实际数据：
(Zambia, 2004, Health management & support workers, 0.994)
(Zambia, 2005, Health management & support workers, 0.033)
(Zambia, 2006, Health management & support workers, 0.928)
(Zambia, 2009, Health management & support workers, 0.071)
(Zambia, 2010, Health management & support workers, 0.036)
我想要的是什么：
(Zambia, 2001, Health management & support workers, 0.994)
(Zambia, 2002, Health management & support workers, 0.994)
(Zambia, 2003, Health management & support workers, 0.994)
(Zambia, 2004, Health management & support workers, 0.994)
(Zambia, 2005, Health management & support workers, 0.033)
(Zambia, 2006, Health management & support workers, 0.928)
(Zambia, 2007, Health management & support workers, 0.071)
(Zambia, 2008, Health management & support workers, 0.071)
(Zambia, 2009, Health management & support workers, 0.071)
(Zambia, 2010, Health management & support workers, 0.036)
(Zambia, 2011, Health management & support workers, 0.036)
(Zambia, 2012, Health management & support workers, 0.036)
这是我的代码：
b = LOAD＆＃39; / dualcore / nomnom＆＃39; AS（国家：chararray，年份：int， 工作：chararray，pertenthpeople：float）; //加载上面显示的数据
c = GROUP b by（country，job）;
INSERT CODE＆gt;＆gt;＆gt;
存储结果INTO＆＃39; / dualcore / nomnomready＆＃39;;
非常感谢任何帮助。谢谢！