[SERVER-20582] _id time reflects end of chunk instead of beginning Created: 23/Sep/15  Updated: 27/Oct/15  Resolved: 22/Oct/15

Status: Closed
Project: Core Server
Component/s: Diagnostics
Affects Version/s: None
Fix Version/s: 3.2.0-rc1

Type: Bug Priority: Major - P3
Reporter: Bruce Lucas (Inactive) Assignee: Mark Benvenuto
Resolution: Done Votes: 0
Labels: FTDC
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Depends
Backwards Compatibility: Fully Compatible
Operating System: ALL
Sprint: Platform A (10/09/15), Platform B (10/30/15)
Participants:

 Description   

The _id field of the chunk documents is a datetime at or later than the last of the samples in the chunk. The spec says it should be the "clock immediately before the record was first collected", and this is a reasonable definition, consistent with the timestamp used for the filename indicating the beginning of the samples in the file. A stable definition for these timestamps is helpful for efficient filtering of a date range when processing the files.



 Comments   
Comment by Githook User [ 22/Oct/15 ]

Author:

{u'username': u'markbenvenuto', u'name': u'Mark Benvenuto', u'email': u'mark.benvenuto@mongodb.com'}

Message: SERVER-20582: _id time reflects end of chunk instead of beginning
Branch: master
https://github.com/mongodb/mongo/commit/a7863d44d31812ff24d5db4e1af650ad5411bea8

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