[SERVER-24532] Create a MigrationManager on the balancer Created: 13/Jun/16 Updated: 19/Jul/16 Resolved: 13/Jul/16 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Sharding |
| Affects Version/s: | None |
| Fix Version/s: | 3.3.10 |
| Type: | Task | Priority: | Major - P3 |
| Reporter: | Dianna Hohensee (Inactive) | Assignee: | Dianna Hohensee (Inactive) |
| Resolution: | Done | 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: | Sharding 16 (06/24/16), Sharding 17 (07/15/16) | ||||||||
| Participants: | |||||||||
| Linked BF Score: | 0 | ||||||||
| Description |
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The balancer will handle starting up, shutting down, periodically checking for balancing work, and finding precise chunks to move around. These chunks will then be handed to the MigrationManager, which will: attempt to schedule the migrations; manage the distlocks; maintain information about the migrations in progress. The MigrationManager will call moveChunks in parallel by using the TaskExecutor to asynchronously schedule them. It will then wait synchronously for the moveChunk commands to return. MigrationManager
TODO in a later ticket: use the information in the Migration objects to determine migration conflicts so that conflicts aren't just found when the moveChunk command is rejected. |
| Comments |
| Comment by Githook User [ 13/Jul/16 ] |
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Author: {u'username': u'DiannaHohensee', u'name': u'Dianna Hohensee', u'email': u'dianna.hohensee@10gen.com'}Message: |
| Comment by Githook User [ 12/Jul/16 ] |
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Author: {u'username': u'DiannaHohensee', u'name': u'Dianna Hohensee', u'email': u'dianna.hohensee@10gen.com'}Message: Revert " This reverts commit 2155b293eaf4264dee1bdf68022b66e636a20a63. |
| Comment by Githook User [ 11/Jul/16 ] |
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Author: {u'username': u'DiannaHohensee', u'name': u'Dianna Hohensee', u'email': u'dianna.hohensee@10gen.com'}Message: |