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https://issues.apache.org/jira/browse/IGNITE-20673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17798870#comment-17798870
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Konstantin Orlov edited comment on IGNITE-20673 at 12/20/23 8:57 AM:
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[~xtern], [~zstan], folks, do a review please. The patch addresses the
mentioned problem partially, introducing parallelisation only to sequence of
SELECT statements.
was (Author: korlov):
[~korlov], [~zstan], folks, do a review please. The patch addresses the
mentioned problem partially, introducing parallelisation only to sequence of
SELECT statements.
> Sql. Independent multi statement queries need to be executed in parallel.
> -------------------------------------------------------------------------
>
> Key: IGNITE-20673
> URL: https://issues.apache.org/jira/browse/IGNITE-20673
> Project: Ignite
> Issue Type: Improvement
> Components: sql
> Affects Versions: 3.0.0-beta1
> Reporter: Evgeny Stanilovsky
> Assignee: Konstantin Orlov
> Priority: Major
> Labels: ignite-3
> Fix For: 3.0.0-beta2
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Independent or (other words) unrelated queries need to be executed in
> parallel.
> Multi statement request can partially or fully consist of unrelated queries,
> i.e. queries which execution is not depends of previous query execution.
> Simple example:
>
> {noformat}
> --- start multistatement ---
> CREATE TABLE t1
> CREATE TABLE t2
> SELECT * FROM t3
> --- end multistatement ---
> {noformat}
> more complex case:
> {noformat}
> --- start multistatement ---
> CREATE TABLE t1 | paralleled
> CREATE TABLE t2 | paralleled
> SELECT * FROM t2 | not paralleled, waiting for previous execution
> CREATE TABLE t3 | paralleled
> --- end multistatement ---
> {noformat}
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