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Type: Improvement
Resolution: Duplicate
Priority: Minor - P4
Fix Version/s: None
Affects Version/s: 2.1.2
Component/s: Index Maintenance, Sharding
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Confidence Status:
None
Work Order:
3

Aha! Reference:
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Risk Status:
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If sharding on "a", an index on "a,b" is not considered useful if there are multikey (array) values for "b". Theoretically, it should still be useful (though maybe less efficient than single-key indices), so we should be able to use it if no single-key index that start with "a" exists.

depends on

SERVER-1506 when sharding on a and need an index on a,b allow only a,b index

Closed

duplicates

SERVER-9620 Index can be made multikey if a prefix of it is a shard key (splitVectors fail)

Closed

is duplicated by

SERVER-6493 Inserting array value for non-shard-key field used in prefix shard key index succeeds

Closed

Assignee:: Randolph Tan

Reporter:: Kevin Matulef (Inactive)

Participants:: Kevin Matulef, Randolph Tan

Votes:: 0 Vote for this issue

Watchers:: 2 Start watching this issue

Created:: Jun 14 2012 07:42:45 PM UTC

Updated:: Dec 10 2014 11:04:43 PM UTC

Resolved:: May 02 2014 06:07:23 PM UTC

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