Lai Zhou created CALCITE-3071:
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Summary: Cache the whole sql plan to reduce the latency and
improve the performance
Key: CALCITE-3071
URL: https://issues.apache.org/jira/browse/CALCITE-3071
Project: Calcite
Issue Type: Improvement
Components: core
Affects Versions: 1.19.0
Reporter: Lai Zhou
In real business, when sql queries become complex, the overhead of sql plan
will increase quickly , and many of the sql queries are duplicates.
We already do something on cacheing to improve the performance, such as the
issue
https://issues.apache.org/jira/browse/CALCITE-2703,
which reduce code generation and class loading overhead when executing queries
in the EnumerableConvention, but I think it's not enough.
I propose to cache the whole sql plan to reduce the latency ，for the same sql
, ignoring the cost optimizing based on statistics here, we can cache the
generated code for it.
I use the FrameworkConfig API to execute sql queries, in this way I can easily
do this job .
but it's not easy to make a whole sql execution plan(that says code-gen) cache
in the sql processing flow based on JDBC Connection, because there're many
intermediate state in this processing flow.
Let's discuss this feature and the probable solutions.
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