Hadoop - Writing to HBase directly from the Mapper

Question

I have a haddop job that its output should be written to HBase. I do not really needs reducer, the kind of row I would like to insert is determined in the Mapper.

How c

Answer 1

You just need to make the mapper output the pair. OutputFormat only specifies how to persist the output key-values. It does not necessarily mean that the key values come from reducer. You would need to do something like this in the mapper:

... extends TableMapper() {
    ...
    ...
    context.write(, );
}