[cascalog-user] distinct-count on hbase tap gives "local step failed"

Hey Simon, can you please send the entire stack trace? The good stuff is
usually closer to the bottom.

Hi Sam and all,

I thought I should back up a little and see if I could get something more
basic to work i.e. the cascalog examples.

I created an HBase table:

create 'age-table', 'cf'

Then populated it:
put 'age-table', 'alice', 'cf:age', 28
put 'age-table', 'bob', 'cf:age', 33 etc...

hbase(main):014:0> scan 'age-table'
ROW COLUMN+CELL

alice column=cf:age, timestamp=1340286719365, value=28

bob column=cf:age, timestamp=1340286724687, value=33

...

I then ran the code that's in this gist: https://gist.github.com/2965839
and I get a job that runs forever and produces an immense amount of
repetitive [INFO] lines. I've attached as much of my screen buffer as I
could manage but there was much, much more.

I'm probably being exceptionally dumb but any pointers would be gratefully
received.

I'm running cascalog 1.9.0, maple 0.2.0 and (possibly an issue)
HBase 0.92.1 and Hadoop 1.0.3.

Thanks,

Simon

Simon, this is the issue I referenced in an earlier post with recursive
require calls. Try wrapping this in a function and calling that function to
exec the job:

(let [age-table (hbase-tap "age-table" "?person" "cf" "?age")]
(?<- (stdout) [?p ?a] (age-table ?p ?age) (as-string ?age :> ?a)))

Hi Sam,

yes, thanks. I'd realised that after reading your other post. All is
working well now.

Cheers,

S.

Answering myself, a reply to a related question solves this issue:
https://groups.google.com/forum/?fromgroups#!topic/cascalog-user/CiUpCk4075M

Simon