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For some reason the Migration is called twice! #19

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efstathios-chatzikyriakidis opened this issue Mar 24, 2016 · 1 comment

efstathios-chatzikyriakidis commented Mar 24, 2016

I am facing the following problem: The migration is called twice!

Here is my code: http://pastebin.com/wAPHrW8j

Please help.

Collaborator

g0t4 commented Mar 24, 2016

If a doc is changed drastically, it can move around on disk and then be
returned by a cursor a second time.

You can either write an idempotent migration or open your own cursor and
use snapshotting:
https://docs.mongodb.org/manual/core/read-isolation-consistency-recency/
(pay heed to the warnings listed)

On Thu, Mar 24, 2016 at 8:09 AM, EfstathiosChatzikyriakidis <
[email protected]> wrote:

I am facing the following problem: The migration is called twice!

Here is my code: http://pastebin.com/wAPHrW8j

Please help.

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