Hello everbody,
I am just getting to know the rhbase library.
Unfortunately the example code for hb.get.data.frame() returns NULL. What am I doing wrong, or has somebody else the same issue?
# create testtable
hb.new.table('testtable','x:x','y:y','z:z') #works fine
# get data frame, note the columns have ":" appended
iter <- hb.get.data.frame("testtable",start="20100105")
iter
()
The scan.data.frame function works for me.
When I want to do an analysis on big data, I should rather work with the rmr2 library using the experimental Hbase function, correct?
The hbase library is just for getting data in and out.
I was able to create a data.frame using data.table and hb.scan.ex().
Maybe someone can also explain if there are limitations to the filterstring parameter. I just got the SingleColumnValueFilter to work. Other tries returned a TException.