[SERVER-39270] Allow top-level $lookup stages to run in parallel on multiple shards Created: 29/Jan/19 Updated: 29/Oct/23 Resolved: 02/Jul/21 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Querying |
| Affects Version/s: | None |
| Fix Version/s: | 5.1.0-rc0 |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Ian Boros | Assignee: | Katherine Wu (Inactive) |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Backwards Compatibility: | Fully Compatible | ||||||||||||||||||||
| Sprint: | Query Optimization 2021-06-14, Query Optimization 2021-06-28, Query Optimization 2021-07-12 | ||||||||||||||||||||
| Participants: | |||||||||||||||||||||
| Description |
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This will involve changing the 'distributedPlanLogic()' for DocumentSourceLookup. Note that only top-level $lookups should be allowed to run in parallel, and any nested $lookup stages in the pipeline should remain on the "merging" half of the pipeline and be run serially. |
| Comments |
| Comment by Vivian Ge (Inactive) [ 06/Oct/21 ] |
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Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it’s been triggered. For more active release information, please keep an eye on #server-release. Thank you! |
| Comment by Githook User [ 02/Jul/21 ] |
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Author: {'name': 'Katherine Wu', 'email': 'katherine.wu@mongodb.com', 'username': 'kaywux'}Message: |