Handle In-Memory Store and Load Changes
The change, in this release, to store each dataset in its own
In-Memory Store has led to significant changes in the syntax for the
<storeto> and
<loadfrom> statements that are not backwards compatible. See also
Working with
Presto Analytics In-Memory Stores for more information on this change.
RAQL supports both the original and the new semantics using a new version attribute. Mashups from previous releases that use either of these statements must be updated to indicate which syntax and semantics should be used:
To continue to use your existing mashups and
In-Memory Stores from 3.6, add
version="1.0" to your existing mashups that use <storeto> or <loadfrom>. For example:
<storeto key='stocks2011' variable='stocksDS'
version='1.0'/>
To update your existing mashups to use individual stores for each dataset you do not need to add the
version attribute as the new syntax is the default. Instead, you must provide the name of the
In-Memory Store to use with the
cache attribute. You must also update the
key attribute for <storeto> and remove it from <loadfrom>. The
scope,
append and
partionsize attributes are not available.
