The error about hbase-sink

[dlz456119]

 Hello,every one:
        Unfortunately, I encountered trouble，but I think it may be easy.I use 
the hbase as a sink,but it cannot write data to hbase,I see the source,and find 
that the payloadColumn must be not null.I feel very surprise,because in 
hbase-sink of flume doc I can not find any one about payloadColumn,then it must 
be null, that I cannot write data to hbase,why is it?