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Type: New Feature
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Resolution: Won't Fix
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Priority: Major - P3
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None
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Affects Version/s: 1.7.1
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Component/s: None
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None
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Environment:db version v1.7.2-pre-, pdfile version 4.5
Tue Oct 5 16:50:28 git version: 41b422b789dd8ce8c9ae57063bc6fcca29182912
Problem:
In some scenarios the user chosen shard key may be update-able. Currently these updates are prevented.
Reproduce:
> db.blogs.find()
{ "_id" : ObjectId("4cab5334e9d125376ee1006d"), "author" : "jim", "clocktime" : "Tue Oct 05 2010 12:32:52 GMT-0400 (EDT)", "ts" : 1, "tags" : [ "yes", "no" ] }> db.printShardingStatus()
— Sharding Status —
sharding version:
shards:
{ "_id" : "shard0000", "host" : "10.194.251.95:27000" } { "_id" : "shard0001", "host" : "10.202.251.67:27000" }databases:
{ "_id" : "admin", "partitioned" : false, "primary" : "config" } { "_id" : "scaleout", "partitioned" : true, "primary" : "shard0000" } scaleout.blogs chunks:
{ "ts" :
} -->>
{ "ts" : 0 }on : shard0000
{ "t" : 2000, "i" : 1 }{ "ts" : 0 }
-->> { "ts" :
{ $maxKey : 1 }} on : shard0001
{ "t" : 2000, "i" : 0 }> db.blogs.update(
{ ts : 1},
{ts : 2})
change would move shards!
Solution:
Allow shard_key updates and therefore moves between shards.
- is related to
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SERVER-1892 Failed to update shard key with "change would move shards!" even though the chunk would not move
- Closed