[DOCS-2757] Mistake on the Chunks page Created: 19/Feb/14  Updated: 10/Apr/14  Resolved: 19/Feb/14

Status: Closed
Project: Documentation
Component/s: None
Affects Version/s: None
Fix Version/s: v1.3.1

Type: Bug Priority: Major - P3
Reporter: William Cross Assignee: Sam Kleinman (Inactive)
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Participants:
Days since reply: 9 years, 44 weeks, 6 days ago

 Description   

http://docs.mongodb.org/manual/core/sharding-chunk-splitting/

This page states: "When a chunk grows beyond the specified chunk size, a mongos instance will split the chunk in half."

This is not always strictly true. The mongo s will try to split it in half, but supposing you've chosen a shard key with insufficient cardinality, and all data on the chunk has the same shard value, it will never split even though it outgrows 64MB.



 Comments   
Comment by Githook User [ 10/Apr/14 ]

Author:

{u'username': u'bgrabar', u'name': u'Bob Grabar', u'email': u'bob.grabar@10gen.com'}

Message: DOCS-2757: updating cross references

Signed-off-by: kay <kay.kim@10gen.com>
Branch: master
https://github.com/mongodb/docs/commit/d316d36a95c266692422c4259c87d5470c234b1d

Comment by Githook User [ 10/Apr/14 ]

Author:

{u'username': u'bgrabar', u'name': u'Bob Grabar', u'email': u'bob.grabar@10gen.com'}

Message: DOCS-2757: update configuration example and reword intro to config file

Signed-off-by: kay <kay.kim@10gen.com>
Branch: master
https://github.com/mongodb/docs/commit/104ee4f05750c4152349332d9fb900d27ec4c2ac

Comment by Githook User [ 19/Feb/14 ]

Author:

{u'username': u'tychoish', u'name': u'Sam Kleinman', u'email': u'samk@10gen.com'}

Message: DOCS-2757: clarifying timing of chunk splits
Branch: v2.4
https://github.com/mongodb/docs/commit/433970c3dc0e8d5206725b01822287a892cc6f00

Comment by Githook User [ 19/Feb/14 ]

Author:

{u'username': u'tychoish', u'name': u'Sam Kleinman', u'email': u'samk@10gen.com'}

Message: DOCS-2757: clarifying timing of chunk splits
Branch: master
https://github.com/mongodb/docs/commit/ad0ceb8e43d936eaed0309b9483dfa5aafbd8086

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