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[Flight] JDBC driver: cache failed connection attempts and make connect timeout adjustible #494

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lidavidm opened this issue Jan 9, 2025 · 0 comments · May be fixed by #495
Open

[Flight] JDBC driver: cache failed connection attempts and make connect timeout adjustible #494

lidavidm opened this issue Jan 9, 2025 · 0 comments · May be fixed by #495
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Type: enhancement New feature or request

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lidavidm commented Jan 9, 2025

Describe the enhancement requested

  • The default connect timeout is 30 seconds. This is rather painful when the server returns an address that isn't reachable. (Example: the server is deployed on a Kubernetes cluster that is being accessed via proxy/port-forwarding, and the server has a separated data plane/control plane.)
  • We hit this timeout on every query. As a stepping stone to full caching of clients ([Java][Flight] Add caching of FlightClients to JDBC #157), we can cache failures and avoid trying those locations first on subsequent queries (we can still try them last in case other locations fail)
@lidavidm lidavidm added the Type: enhancement New feature or request label Jan 9, 2025
lidavidm added a commit to lidavidm/arrow-java that referenced this issue Jan 9, 2025
@lidavidm
apacheGH-494: [Flight] Improve handling of unreachable locations in JDBC
3c34f84 
- Expose gRPC for the client builder
- Cache failed locations and try them last
- Allow configuring the connect timeout

Fixes apache#494.
@lidavidm lidavidm self-assigned this Jan 9, 2025
@lidavidm lidavidm linked a pull request Jan 9, 2025 that will close this issue
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lidavidm added a commit to lidavidm/arrow-java that referenced this issue Jan 9, 2025
@lidavidm
apacheGH-494: [Flight] Improve handling of unreachable locations in JDBC
ebade2d 
- Expose gRPC for the client builder
- Cache failed locations and try them last
- Allow configuring the connect timeout

Fixes apache#494.
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GH-494: [Flight] Improve handling of unreachable locations in JDBC lidavidm/arrow-java
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