Campbell et al v. Facebook Inc.

Filing 147

Administrative Motion to File Under Seal Documents in Support of Facebook's Opposition to Plaintiffs Motion for Class Certification filed by Facebook Inc.. *** ATTACHMENTS 1, 2, 6 LOCKED AT FILER'S REQUEST. SEE DOCUMENT 162 *** (Attachments: # 1 Declaration Declaration of Nikki Stitt Sokol In Support Of Defendant Facebook, Inc.s Administrative Motion to File Documents in Support of its Opposition to Plaintiffs Motion for Class Certification Under Seal, # 2 Proposed Order [Proposed] Order Authorizing the Filing of Documents Under Seal, # 3 Exhibit Exhibit 1 (Unredacted), # 4 Exhibit Exhibit 2 (Redacted), # 5 Exhibit Exhibit 3 (Unredacted), # 6 Exhibit Exhibit 4 (Redacted), # 7 Exhibit Exhibit 5 (Unredacted), # 8 Exhibit Exhibit 6 (Redacted), # 9 Exhibit Exhibit 7 (Unredacted), # 10 Exhibit Exhibit 8 (Redacted))(Chorba, Christopher) (Filed on 1/15/2016) Modified on 1/22/2016 (ewn, COURT STAFF). Modified on 1/22/2016 (vlkS, COURT STAFF).

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EXHIBIT 8 REDACTED VERSION OF DOCUMENT(S) SOUGHT TO BE SEALED EXHIBIT W Lieff Cabraser Heimann & Bernstein, LLP 275 Battery Street, 29th Floor San Francisco, CA 94111-3339 t 415.956.1000 f 415.956.1008 July 24, 2015 VIA E-MAIL Joshua Jessen, Esq. Gibson, Dunn & Crutcher LLP 1881 Page Mill Road Palo Alto, California 94304 jjessen@gibsondunn.com RE: Campbell v. Facebook, Inc., N.D. Cal. Case No. 13-cv-05996-PJH Dear Josh: I write regarding Plaintiffs’ Interrogatory No. 8 and Request for Production No 41. As an initial matter, to the extent Facebook objects to the terms used in Interrogatory No. 8, these are Facebook’s employees’ own terms used to describe Facebook’s internal data systems in a presentation at a public symposium. See Bronson, et al, TAO: Facebook’s Distributed Data Store for the Social Graph, USENIX ATC'13 Proceedings of the 2013 USENIX conference on Annual Technical Conference, § 3.1 (June, 2013)1 (the “Bronson Article”). As such, at this stage in the case, it is Facebook, not Plaintiffs, that is in the best in position to define and understand these terms. For reference, Interrogatory No. 8. requests that Facebook: Identify all facts relating to the Processing of each Private Message sent or received by Plaintiffs containing a URL2, including, for each Private Message: (A) all Objects that were created during the Processing of the Private Message, including the (id) and the Object Type for each Av ailable at https://research.facebook.com/publications/161988287 341248/tao-facebook-s-distributeddata-store-for-the-social-graph/. 2 Each such Priv ate Message has been identified by each Plaintiff in Ex hibit 1 to his respective Objections and Responses to Defendant’s First Set of Interrogatories. 1 S an Franci sco New Y ork Nashvi l l e www.l i effcabraser.com Joshua Jessen, Esq. July 24, 2015 Page 2 Object, as well as any Key -> Value Pair(s) contained in each Object; (B) all Objects that were created specifically when the embedded URL was shared, including the (id) and the Object Type for each Object, as well as any Key -> Value Pair(s) contained in each Object; (C) all Associations related to each Private Message, identified by the Source Object, Association Type, and Destination Object, as well as any Key -> Value Pair(s) contained in each Association; (D) the database names and table names in which each Association and Object is stored; (E) each application or feature in Facebook that uses the Objects or Associations created for each Private Message; and (F) how each Object associated with the Private Message was used by Facebook. The terms “id,” “Objects,” “Object Type,” “Source Object,” “Destination Object,” “Association,” “Association Type,” and “Key -> Value Pair” are all used in the Bronson Article in the context of describing Facebook’s TAO data store. As described at page 50 of the Bronson Article: TAO objects are typed nodes, and TAO associations are typed directed edges between objects. Objects are identified by a 64-bit integer (id) that is unique across all objects, regardless of object type (otype). Associations are identified by the source object (id1), association type (atype) and destination object (id2). At most one association of a given type can exist between any two objects. Both objects and associations may contain data as key→value pairs. A per-type schema lists the possible keys, the value type, and a default value. Each association has a 32-bit time field, which plays a central role in queries. Objects and associations are further described in the Bronson Article as follows: Object: (id) → (otype, (key value)∗) Assoc.: (id1, atype, id2) → (time, (key value)∗)

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