[SERVER-5448] Add support for 'jsMode' during a sharded Map/Reduce Created: 29/Mar/12 Updated: 06/Dec/22 Resolved: 09/Mar/20 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | MapReduce |
| Affects Version/s: | 2.1.0 |
| Fix Version/s: | None |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Azat Khuzhin | Assignee: | Backlog - Query Team (Inactive) |
| Resolution: | Won't Fix | Votes: | 6 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Environment: |
2.1.1-pre- |
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| Issue Links: |
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| Assigned Teams: |
Query
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| Description |
| Comments |
| Comment by Charlie Swanson [ 09/Mar/20 ] |
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During a recent project where we created a new implementation of mapReduce backed by the aggregation framework, we deprecated the 'jsMode' argument to mapReduce. This argument will be ignored starting in 4.4.0. |
| Comment by Charlie Swanson [ 10/Mar/17 ] |
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I've updated the ticket's summary and description to match my understanding of this request, please correct me if I've missed something. |
| Comment by Abhishek Kumar Singh [ 23/Aug/16 ] |
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Unaware of the fact that this feature has been removed from sharding , I moved my MR from standalone servers to sharded replica sets and now my programs running pretty slow. Are there any plans of adding jsmode to sharding? This will be a really great improvement on speed. |
| Comment by Mark Hall [ 31/Jul/14 ] |
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I'm using MR to compute profiling statistics for entire collections (mean, std. dev, categorical value frequencies etc.) and jsMode makes a huge difference (an order of magnitude faster). I would love to see this turned on for sharding. Cheers, |
| Comment by Antoine Girbal [ 04/Apr/12 ] |
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right, "jsMode" option is at root level and currently is rejected by mongos. |
| Comment by Eliot Horowitz (Inactive) [ 30/Mar/12 ] |
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No - it means the asignee needs to diagnose the issue, perhaps with more input from you. |
| Comment by Azat Khuzhin [ 29/Mar/12 ] |
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By changing status to "debugging with submitter" you mean than I must write what MR command to run ? |