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  1. Core Server
  2. SERVER-16621

emit at mapper may run out of memory

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      The mapper may generate lots of items and each item is kept in-memory at this state. It would be crashed when run out of memory.

      NOTE: Skip the checking when using v8 engine (_jsMode: true). The best way is checking at emit function and transfers in memory storage to temp collection. Current state is checking at each document handled because the framework flow designed.

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              backlog-query-execution Backlog - Query Execution
              changyy Yuan-Yi Chang
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