[SERVER-2581] MR locks server for a long time in merge and reduce modes with many keys Created: 17/Feb/11 Updated: 12/Jul/16 Resolved: 16/Feb/12 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Performance |
| Affects Version/s: | None |
| Fix Version/s: | 2.1.1 |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Mathias Stearn | Assignee: | Antoine Girbal |
| Resolution: | Done | Votes: | 2 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
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| Description |
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This is probably necessary to implement the current atomic semantics, but I think we could have an optional non-atomic mode |
| Comments |
| Comment by Antoine Girbal [ 01/Sep/12 ] |
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Doc was added:
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| Comment by Pavel Chertorogov [ 11/Jun/12 ] |
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Please add to DOCS information about this flag. |
| Comment by Antoine Girbal [ 16/Feb/12 ] |
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@Nathan yes it will be supported with sharding. |
| Comment by auto [ 16/Feb/12 ] |
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Author: {u'login': u'agirbal', u'name': u'agirbal', u'email': u'antoine@10gen.com'}Message: |
| Comment by Nathan Ehresman [ 18/Oct/11 ] |
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Will this be supported in a sharded environment? In cf953c164861, I didn't see the "nonAtomic" output option added to MRCmd::fixForShards in commands_public.cpp, so I think it may cause an error ("unknown m/r field for sharding") if I'm reading the code right. |
| Comment by Antoine Girbal [ 13/Sep/11 ] |
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added a "nonAtomic" flag to output option |
| Comment by auto [ 13/Sep/11 ] |
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Author: {u'login': u'agirbal', u'name': u'agirbal', u'email': u'antoine@10gen.com'}Message: |