[DOCS-7000] cursor.snapshot() page should no longer reference _id index Created: 19/Jan/16  Updated: 11/Jan/17  Resolved: 27/Jan/16

Status: Closed
Project: Documentation
Component/s: manual
Affects Version/s: None
Fix Version/s: 01112017-cleanup

Type: Bug Priority: Major - P3
Reporter: J Rassi Assignee: Kyle Suarez
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Related
related to SERVER-19593 Allow collscans on $snapshot queries ... Closed
Participants:
Days since reply: 7 years, 29 weeks ago

 Description   

For performance reasons, the "snapshot" query option was changed in 3.2 to force a collection scan (instead of forcing an _id index scan) when used against a server configured with the WiredTiger storage engine. This was changed as part of SERVER-19593.

The cursor.snapshot() documentation should be updated to remove the reference to the _id index (however, the "snapshot" query option remains incompatible with sorts and hints).



 Comments   
Comment by Emily Hall [ 27/Jul/16 ]

Closed for housekeeping on 7/27/2016 by Emily Hall.
If you require additional support, please open a new ticket for prioritization.
Thanks,
Emily

Comment by Githook User [ 27/Jan/16 ]

Author:

{u'username': u'ksuarz', u'name': u'Kyle Suarez', u'email': u'ksuarz@gmail.com'}

Message: DOCS-7000 no _id index scan for cursor.snapshot()

Due to SERVER-19593, the cursor.snapshot() method no longer forces an _id index
scan and instead performs a collection scan.

This removes the description of the implementation of cursor.snapshot(). It also
removes the extract isolate-cursor-snapshot-faq.

Signed-off-by: kay <kay.kim@10gen.com>
Branch: master
https://github.com/mongodb/docs/commit/ef3f09b9236684ddda0b9df50bfff3beb554af69

Generated at Thu Feb 08 07:53:24 UTC 2024 using Jira 9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66.