[SERVER-27533] Allow "from" collection of $graphLookup to be sharded Created: 28/Dec/16 Updated: 06/Dec/22 Resolved: 30/Sep/21 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Aggregation Framework |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Jyotman Singh | Assignee: | Backlog - Query Optimization |
| Resolution: | Duplicate | Votes: | 11 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Assigned Teams: |
Query Optimization
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| Case: | (copied to CRM) | ||||||||||||||||||||
| Description |
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Issue Status as of Mar 21, 2019 The $graphLookup aggregation stage allows for graph searches across unsharded collections or to use results from a sharded collection to perform a graph search in an unsharded collection. It does not allow for the "from" collection to be sharded. We understand this is a painful and unfortunate limit on the capabilities of the query language. We strive to make it so that the distribution of data does not impact the experience with the database, but are unable to implement this improvement to our satisfaction at this time. Implementing this feature would be subject to the same problems as We plan to work towards this feature in the future, but have no specific target date or release at this time. Original DescriptionIn the docs it mentions that the from field in $graphLookup stage in the aggregation pipeline cannot take a sharded collection. |
| Comments |
| Comment by Katherine Wu (Inactive) [ 30/Sep/21 ] |
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Closing this ticket, support for sharded "from" collections in $lookup and $graphLookup will be part of the upcoming 5.1 release. |
| Comment by Muralikrishnan Mathiraju Ragupathiraju [ 10/Feb/21 ] |
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Can you provide ETA for this feature? Will be great if you can include in upcoming releaseĀ |
| Comment by senthil [ 02/Aug/19 ] |
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is there any update on this feature? Regards Sentil |
| Comment by Yuri Sokolovski [ 13/Mar/19 ] |
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Is there an ETA for this feature? Can it be made part of upcoming 4.2? Thanks! |
| Comment by Anton Ioffe [ 25/Jan/19 ] |
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really need this |
| Comment by James Wahlin [ 24/Jan/19 ] |
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This ticket will remove the requirement that we must run on mongos as with |
| Comment by Micha? Czernecki [ 04/Jul/17 ] |
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$graphLookup in 3.4 ( |