Schedule request in worker thread

[penghuo]

Signed-off-by: penghuo penghuo@gmail.com

Description

• Schedule request in worker thread.

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov-commenter]

Codecov Report

Merging #748 (2076106) into main (6fb3fac) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##               main     #748   +/-   ##
=========================================
  Coverage     94.78%   94.79%           
- Complexity     2880     2883    +3     
=========================================
  Files           286      287    +1     
  Lines          7735     7743    +8     
  Branches        565      565           
=========================================
+ Hits           7332     7340    +8     
  Misses          349      349           
  Partials         54       54           

Flag	Coverage Δ
query-workbench	62.76% <ø> (ø)
sql-engine	97.76% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
.../opensearch/sql/opensearch/executor/Scheduler.java	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[joshuali925]

just curious, why do we force push to squash commits like this? i felt reviewing is more difficult since I had to compare 2076106 and e86b308 to figure out what has changed, or is there a better way?

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-2.x 2.x
# Navigate to the new working tree
cd .worktrees/backport-2.x
# Create a new branch
git switch --create backport/backport-748-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 ce15448fbd005931b4a7272a643e2d076334ee63
# Push it to GitHub
git push --set-upstream origin backport/backport-748-to-2.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-748-to-2.x.