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[data.search] Remove bfetch/bsearch #186139

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lukasolson opened this issue Jun 12, 2024 · 2 comments
Open

[data.search] Remove bfetch/bsearch #186139

lukasolson opened this issue Jun 12, 2024 · 2 comments
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Feature:Search Querying infrastructure in Kibana impact:medium Addressing this issue will have a medium level of impact on the quality/strength of our product. loe:medium Medium Level of Effort performance refactoring Team:DataDiscovery Discover App Team (Document Explorer, Saved Search, Surrounding documents, Data, DataViews)

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@lukasolson
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lukasolson commented Jun 12, 2024

Summary:

Related: #166206

We recently disabled bfetch/bsearch in serverless (#183096). As part of this investigation (#166206 (comment)) we analyzed performance in an http2 environment without bfetch, and found no regressions (and possibly some performance gains). We would like to move forward with removing bfetch/bsearch for a few reasons:

  1. It is middleware that is no longer necessary in an http2 environment
  2. It adds significant complexity to the codebase & search services
  3. It creates a burden for support cases (having to disable compression for troubleshooting)
  4. It bypasses the core http router APIs
@lukasolson lukasolson added Feature:Search Querying infrastructure in Kibana performance refactoring Team:DataDiscovery Discover App Team (Document Explorer, Saved Search, Surrounding documents, Data, DataViews) labels Jun 12, 2024
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Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)

@kertal
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kertal commented Jun 18, 2024

Linking #7104

@lukasolson lukasolson added loe:medium Medium Level of Effort impact:medium Addressing this issue will have a medium level of impact on the quality/strength of our product. labels Jul 8, 2024
lukasolson added a commit that referenced this issue Oct 10, 2024
## Summary

Part of #186139.

Disables `bfetch` by default.

### Checklist

Delete any items that are not applicable to this PR.

- [ ] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)
- [ ]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [ ] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [ ] [Flaky Test
Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was
used on any tests changed
- [ ] Any UI touched in this PR is usable by keyboard only (learn more
about [keyboard accessibility](https://webaim.org/techniques/keyboard/))
- [ ] Any UI touched in this PR does not create any new axe failures
(run axe in browser:
[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),
[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))
- [ ] If a plugin configuration key changed, check if it needs to be
allowlisted in the cloud and added to the [docker
list](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)
- [ ] This renders correctly on smaller devices using a responsive
layout. (You can test this [in your
browser](https://www.browserstack.com/guide/responsive-testing-on-local-server))
- [ ] This was checked for [cross-browser
compatibility](https://www.elastic.co/support/matrix#matrix_browsers)


### Risk Matrix

Delete this section if it is not applicable to this PR.

Before closing this PR, invite QA, stakeholders, and other developers to
identify risks that should be tested prior to the change/feature
release.

When forming the risk matrix, consider some of the following examples
and how they may potentially impact the change:

| Risk | Probability | Severity | Mitigation/Notes |

|---------------------------|-------------|----------|-------------------------|
| Multiple Spaces—unexpected behavior in non-default Kibana Space.
| Low | High | Integration tests will verify that all features are still
supported in non-default Kibana Space and when user switches between
spaces. |
| Multiple nodes—Elasticsearch polling might have race conditions
when multiple Kibana nodes are polling for the same tasks. | High | Low
| Tasks are idempotent, so executing them multiple times will not result
in logical error, but will degrade performance. To test for this case we
add plenty of unit tests around this logic and document manual testing
procedure. |
| Code should gracefully handle cases when feature X or plugin Y are
disabled. | Medium | High | Unit tests will verify that any feature flag
or plugin combination still results in our service operational. |
| [See more potential risk
examples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) |


### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

---------

Co-authored-by: Peter Pisljar <peter.pisljar@elastic.co>
lukasolson added a commit that referenced this issue Oct 18, 2024
## Summary

Part of #186139.

Bfetch exports `ItemBuffer` and `TimedItemBuffer`, the latter of which
is also used inside of the content management plugin.

After bfetch is removed, content management will be the sole consumer,
which is why I've added the team ownership to be appex-sharedux.

### Checklist

- [x]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
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Labels
Feature:Search Querying infrastructure in Kibana impact:medium Addressing this issue will have a medium level of impact on the quality/strength of our product. loe:medium Medium Level of Effort performance refactoring Team:DataDiscovery Discover App Team (Document Explorer, Saved Search, Surrounding documents, Data, DataViews)
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