[jira] [Created] (IMPALA-12253) Improve the integration of codegen cache and async codegen

["Yida Wu (Jira)" <ji...@apache.org>]

Yida Wu created IMPALA-12253:
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             Summary: Improve the integration of codegen cache and async codegen
                 Key: IMPALA-12253
                 URL: https://issues.apache.org/jira/browse/IMPALA-12253
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
            Reporter: Yida Wu
            Assignee: Yida Wu


IMPALA-11470 adds support for codegen caching, from the single node perf A-B testing, codegen caching could perform better than async codegen when the cache hits for low latency queries, while the async codegen is faster for the first runs. To better integrate the codegen caching with the existing async codegen, we may optimize the workflow like below while async codegen and codegen caching both enabled:
 # Generate the codegen caching key before doing async codegen.
 # If key is existing in the cache, go codegen caching.
 # Otherwise, go async codegen.

  



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