[jira] [Created] (ARROW-17837) [C++] Create ExecPlan-owned QueryContext that will store a plan's shared data structures

["Sasha Krassovsky (Jira)" <ji...@apache.org>]

Sasha Krassovsky created ARROW-17837:
----------------------------------------

             Summary: [C++] Create ExecPlan-owned QueryContext that will store a plan's shared data structures
                 Key: ARROW-17837
                 URL: https://issues.apache.org/jira/browse/ARROW-17837
             Project: Apache Arrow
          Issue Type: Improvement
            Reporter: Sasha Krassovsky
            Assignee: Sasha Krassovsky


As we begin to include more and more plan-global stuff (such as Scheduler, AsyncScheduler, IOScheduler, ExecContext), ExecPlan's definition is becoming cluttered. ExecPlan should store and organize nodes, and store these structures elsewhere. We thus introduce QueryContext which will store any information related to the currently executing plan.

An added bonus is that now more components can be decoupled from ExecPlan and rely only on QueryContext (useful for e.g. testing, or just reusing a component in a non-ExecPlan context).

Also, this QueryContext can introduce options for the query such as maximum memory used and this legacy batching thingy.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)