[SERVER-1358] Split or achor "jumbo" chunks Created: 03/Jul/10 Updated: 12/Jul/16 Resolved: 17/Dec/10 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Sharding |
| Affects Version/s: | None |
| Fix Version/s: | 1.7.4 |
| Type: | Improvement | Priority: | Major - P3 |
| Reporter: | Alberto Lerner | Assignee: | Alberto Lerner |
| Resolution: | Done | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Description |
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We rely on a collection's sharding key having enough distinct values so to split keys across chunks and on autosplitting working the large majority of times. If, for some reason, a very large chunk forms, we want to detect it. One point we can do that is when we get all the disklocs during a migrate. If the total size or # of objects is too big we want to fail the migrate and force a split. If we can't split them, find a way to prevent attempting to move it repeatedly. |
| Comments |
| Comment by auto [ 18/Dec/10 ] |
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Author: {u'login': u'alerner', u'name': u'Alberto Lerner', u'email': u'alerner@10gen.com'}Message: |
| Comment by auto [ 17/Dec/10 ] |
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Author: {u'login': u'alerner', u'name': u'Alberto Lerner', u'email': u'alerner@10gen.com'}Message: |
| Comment by auto [ 17/Dec/10 ] |
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Author: {u'login': u'alerner', u'name': u'Alberto Lerner', u'email': u'alerner@10gen.com'}Message: |
| Comment by auto [ 17/Dec/10 ] |
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Author: {u'login': u'alerner', u'name': u'Alberto Lerner', u'email': u'alerner@10gen.com'}Message: |
| Comment by auto [ 27/Oct/10 ] |
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Author: {'login': 'alerner', 'name': 'Alberto Lerner', 'email': 'alerner@10gen.com'}Message: don't split after a balance move fails (a lock taken would cause it) and defer splitting jumbos to |