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  1. Core Server
  2. SERVER-9178

Timestamp does not round trip correctly in V8 Javascript shell

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    • Type: Icon: Bug Bug
    • Resolution: Duplicate
    • Priority: Icon: Critical - P2 Critical - P2
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    • Affects Version/s: None
    • Component/s: JavaScript
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      Spidermonkey (correct)

      > interpreterVersion()
SpiderMonkey 1.7
> db.ts.remove()
> db.ts.insert({ ts : Timestamp(5,10) })
> var ts = db.ts.findOne().ts
> ts
Timestamp(5, 10)
> ts.t
5
> ts.i
10
> assert.eq(ts, Timestamp(5,10))
>

      V8 (old/incorrect)

      > interpreterVersion()
V8 3.12.19
> db.ts.remove()
> db.ts.insert({ ts : Timestamp(5,10) })
> var ts = db.ts.findOne().ts
> ts
{ "t" : 5, "i" : 10 }
> ts.i
10
> ts.t
5
> assert.eq(ts, Timestamp(5,10))
assert: [{ "t" : 5, "i" : 10 }] != [Timestamp(5, 10)] are not equal : undefined
Error: Printing Stack Trace
    at printStackTrace (src/mongo/shell/utils.js:37:15)
    at doassert (src/mongo/shell/assert.js:6:5)
    at Function.assert.eq (src/mongo/shell/assert.js:32:5)
    at (shell):1:8
Fri Mar 29 13:01:50.621 JavaScript execution failed: [{ "t" : 5, "i" : 10 }] != [Timestamp(5, 10)] are not equal : undefined at src/mongo/shell/assert.js:L7
>
      Show
      Spidermonkey (correct) > interpreterVersion() SpiderMonkey 1.7 > db.ts.remove() > db.ts.insert({ ts : Timestamp(5,10) }) > var ts = db.ts.findOne().ts > ts Timestamp(5, 10) > ts.t 5 > ts.i 10 > assert .eq(ts, Timestamp(5,10)) > V8 (old/incorrect) > interpreterVersion() V8 3.12.19 > db.ts.remove() > db.ts.insert({ ts : Timestamp(5,10) }) > var ts = db.ts.findOne().ts > ts { "t" : 5, "i" : 10 } > ts.i 10 > ts.t 5 > assert .eq(ts, Timestamp(5,10)) assert : [{ "t" : 5, "i" : 10 }] != [Timestamp(5, 10)] are not equal : undefined Error: Printing Stack Trace at printStackTrace (src/mongo/shell/utils.js:37:15) at doassert (src/mongo/shell/ assert .js:6:5) at Function. assert .eq (src/mongo/shell/ assert .js:32:5) at (shell):1:8 Fri Mar 29 13:01:50.621 JavaScript execution failed: [{ "t" : 5, "i" : 10 }] != [Timestamp(5, 10)] are not equal : undefined at src/mongo/shell/ assert .js:L7 >

      A Timestamp inserted in the V8 shell using the constructor comes out as an ordinary object instead of a Timestamp.

      According to http://docs.mongodb.org/manual/core/document/#timestamps, this was changed in 2.1, but apparently only in Spidermonkey.

            Assignee:
            Unassigned Unassigned
            Reporter:
            sverch Shaun Verch
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              Created:
              Updated:
              Resolved: