Hi all,
A little while back, I started a project called pygmalion for example scripts
and UDFs for people using Pig with Cassandra. Currently there are a few handy
UDFs in there like:
FromCassandraBag: a way to convert from what Cassandra returns (key:chararray,
columns:bag {column:tuple (name, value)}) to something more tabular (key,
value1, value2, value3). You specify the values you want to project - it's
good for tabular data.
ToCassandraBag: a way to convert from (key, value1, value2, value3) to what
Cassandra expects when writing - (key:chararray, columns:bag {column:tuple
(name, value)}) - the column names are extracted from the variable names in the
Pig script.
Both contributed by Jacob Perkins with slight revisions by Jeremy Hanna
StringConcat: probably something everyone implements but instead of CONCAT that
only does two strings, it does any number of strings.
GenerateTimeUUID: a udf that generates a time uuid with or without a time to
base it on.
https://github.com/jeromatron/pygmalion/
It definitely needs more work and examples, but I've been using the UDFs in
there for a while with Cassandra 0.7.5 (previously 0.7-branch). Now that 0.7.5
is released, I'd just like to let people know about it if they would like to
contribute or even just use it.
