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  1. Core Server
  2. SERVER-8658

moveChunk error: "Invalid modifier specified: _id" (mongo 2.2.3)

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    • Bug
    • Status: Closed
    • Minor - P4
    • Resolution: Cannot Reproduce
    • 2.2.3
    • None
    • Write Ops
    • None
    • Centos 5.5/6.3, driver 2.7.3
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    Description

      From this thread: https://groups.google.com/forum/?hl=en&fromgroups=#!topic/mongodb-user/i8Te7ip2T-k

      I have had a sharded DB with a single shard for a while. When I added a second shard on Monday, 3 of the chunks failed to migrate - and they are in a continuous loop of starting migrating, fail (invalid modified specified) every few seconds.

      (In addition the chunk mentioned in the above thread, there are 2 other chunks that behave the same way except that they don't generate any errors, they just abort in step 2 without explanation)

      gist with some more relevant logging (starting from when I added the second shard): https://gist.github.com/Alex-Ikanow/5008868

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            Unassigned Unassigned
            apiggott@ikanow.com Alex Piggott
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