[jira] [Created] (MADLIB-1002) CLONE - Sessionization - Phase 2

["Frank McQuillan (JIRA)" <ji...@apache.org>]

Frank McQuillan created MADLIB-1002:
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             Summary: CLONE - Sessionization - Phase 2
                 Key: MADLIB-1002
                 URL: https://issues.apache.org/jira/browse/MADLIB-1002
             Project: Apache MADlib
          Issue Type: New Feature
          Components: Module: Utilities
            Reporter: Frank McQuillan
            Assignee: Nandish Jayaram
            Priority: Minor
             Fix For: v1.9.1


Story

As a data scientist, I want to perform session reconstruction on my data set, so that I can prepare for input into other algorithms like path functions, or predictive analytics algorithms.

This is a follow on to 
https://issues.apache.org/jira/browse/MADLIB-909
to add optional output controls.

Details 

Proposed interface changes:

params (optional)
TEXT, default: NULL. Parameters for sessionization in a comma-delimited string of key-value pairs. See the description below for details.

Parameters

Parameters in this section are supplied in the params argument as a string containing a comma-delimited list of key-value pairs. All of these named parameters are optional, and their order does not matter. You must use the format <param_name> = <value> to specify the value of a parameter, otherwise the parameter is ignored.

{code}
‘output_all_cols = <value>,
 create_view = <value>’
{code} 

Parameters

output_all_cols (Boolean)
	BOOLEAN default: FALSE. Controls which columns are output.  If FALSE, only the partition, time stamp and the generated session ID columns are output.  (The assumption is that the partition columns together with the time stamp column will be sufficient to perform a join with the input table.)  If TRUE, all columns from the source table are output in addition to the generated session ID.

create_view (Boolean)
	BOOLEAN default: TRUE. Determines whether to create a view or materialize a table as output. If you only needed session info once, creating a view could be significantly faster than materializing as a table.



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