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nomad/website/source/docs/runtime
Tim Gross 5e3efbd3ec doc: explain ALLOC_INDEX uniqueness guarantees (#6830)
The `ALLOC_INDEX` isn't guaranteed to be unique, and this has caused
some user confusion. The servers make a best-effort attempt to make
this value unique from 0 to count-1 but when you have canaries on the
task group, there are reused indexes because you have multiple job
versions running at the same time. If a user needs a unique number for
interpolating a value in your application, they can get this by
combining the job version and the alloc index.

Co-Authored-By: Michael Schurter <mschurter@hashicorp.com>
2019-12-10 10:30:26 -05:00
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