[SERVER-5344] Enable parallel execution of sharded count queries with criteria Created: 20/Mar/12  Updated: 31/Aug/12  Resolved: 24/May/12

Status: Closed
Project: Core Server
Component/s: Sharding
Affects Version/s: 2.0.2
Fix Version/s: None

Type: New Feature Priority: Minor - P4
Reporter: Nick Brown Assignee: Randolph Tan
Resolution: Duplicate Votes: 2
Labels: count, neweng, performance, query
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

All


Issue Links:
Depends
Duplicate
is duplicated by SERVER-5797 Uncaught exception in count_slaveok.js Closed
Related
Participants:

 Description   

Change the execution of sharded count queries which have criteria from sequential to parallel to reduce query time.



 Comments   
Comment by Randolph Tan [ 24/May/12 ]

Changes made in SERVER-5797 made the count command in mongos do scatter and gather instead of querying each shards sequentially.

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