s2: Add AsyncFlush method: Complete the block without flushing #927
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My use case is to transfer a large compressed S2 stream with a few changes very often. To get a small diff I want to end blocks at application decided points rather than at byte offsets. This allows me to remove the first byte without every single block changing. Flush() works for this, but it limits concurrency because it waits for the last block to be compressed rather than allowing that asynchronously. So I'd like to propose AsyncFlush, which flushes the buffer to a block, but doesn't flush the block to the io.Writer. There were actually a few places in the s2 code that also wanted to end the block, but didn't necessary want to flush to the writer.
klauspost
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Feb 9, 2024
Co-authored-by: Klaus Post <klauspost@gmail.com>
|
Sounds good to me! Thanks :) |
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[](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | `v1.17.6` -> `v1.17.7` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) #### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@​Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "on tuesday" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/open-telemetry/opentelemetry-collector). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMTIuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIxMi4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9--> --------- Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: opentelemetrybot <107717825+opentelemetrybot@users.noreply.github.com> Co-authored-by: Dmitrii Anoshin <anoshindx@gmail.com>
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This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | indirect | patch | `v1.17.5` -> `v1.17.7` | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) #### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@​Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 ### [`v1.17.6`](https://togithub.com/klauspost/compress/releases/tag/v1.17.6) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.5...v1.17.6) #### What's Changed - zstd: Fix incorrect repeat coding in best mode by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/923](https://togithub.com/klauspost/compress/pull/923) - s2: Fix DecodeConcurrent deadlock on errors by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/925](https://togithub.com/klauspost/compress/pull/925) - build: Remove garble compiler by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/924](https://togithub.com/klauspost/compress/pull/924) **Full Changelog**: klauspost/compress@v1.17.5...v1.17.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMjEuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyMS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->
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This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | indirect | patch | `v1.17.5` -> `v1.17.7` | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) #### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@​Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 ### [`v1.17.6`](https://togithub.com/klauspost/compress/releases/tag/v1.17.6) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.5...v1.17.6) #### What's Changed - zstd: Fix incorrect repeat coding in best mode by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/923](https://togithub.com/klauspost/compress/pull/923) - s2: Fix DecodeConcurrent deadlock on errors by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/925](https://togithub.com/klauspost/compress/pull/925) - build: Remove garble compiler by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/924](https://togithub.com/klauspost/compress/pull/924) **Full Changelog**: klauspost/compress@v1.17.5...v1.17.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMjEuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyMS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->
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This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | indirect | patch | `v1.17.5` -> `v1.17.7` | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) #### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@​Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 ### [`v1.17.6`](https://togithub.com/klauspost/compress/releases/tag/v1.17.6) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.5...v1.17.6) #### What's Changed - zstd: Fix incorrect repeat coding in best mode by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/923](https://togithub.com/klauspost/compress/pull/923) - s2: Fix DecodeConcurrent deadlock on errors by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/925](https://togithub.com/klauspost/compress/pull/925) - build: Remove garble compiler by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/924](https://togithub.com/klauspost/compress/pull/924) **Full Changelog**: klauspost/compress@v1.17.5...v1.17.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMjEuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyMS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->
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) This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | indirect | patch | `v1.17.5` -> `v1.17.7` | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) #### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@​Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 ### [`v1.17.6`](https://togithub.com/klauspost/compress/releases/tag/v1.17.6) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.5...v1.17.6) #### What's Changed - zstd: Fix incorrect repeat coding in best mode by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/923](https://togithub.com/klauspost/compress/pull/923) - s2: Fix DecodeConcurrent deadlock on errors by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/925](https://togithub.com/klauspost/compress/pull/925) - build: Remove garble compiler by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/924](https://togithub.com/klauspost/compress/pull/924) **Full Changelog**: klauspost/compress@v1.17.5...v1.17.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMjEuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyMS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->
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…1421) [](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | `v1.17.6` -> `v1.17.7` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) ##### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@​Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "on tuesday" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/open-telemetry/opentelemetry-collector-contrib). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMTIuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyMC4yIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9--> --------- Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: opentelemetrybot <107717825+opentelemetrybot@users.noreply.github.com>
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…en-telemetry#31421) [](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | `v1.17.6` -> `v1.17.7` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) ##### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@&open-telemetry#8203;Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@&open-telemetry#8203;klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "on tuesday" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/open-telemetry/opentelemetry-collector-contrib). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMTIuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyMC4yIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9--> --------- Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: opentelemetrybot <107717825+opentelemetrybot@users.noreply.github.com>
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My use case is to transfer a large compressed S2 stream with a few changes very often. To get a small diff I want to end blocks at application decided points rather than at byte offsets. This allows me to remove the first byte without every single block changing.
Flush() works for this, but it limits concurrency because it waits for the last block to be compressed rather than allowing that asynchronously.
So I'd like to propose AsyncFlush, which flushes the buffer to a block, but doesn't flush the block to the io.Writer.
There were actually a few places in the s2 code that also wanted to end the block, but didn't necessary want to flush to the writer.