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BUG: fix hash collisions for from int overflow #14805

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Merged
merged 3 commits into from
Dec 6, 2016

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jreback
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@jreback jreback commented Dec 6, 2016

hash collisions brought up: #14711 (comment)

closes #14804

@jreback jreback added the Bug label Dec 6, 2016
@jreback jreback added this to the 0.19.2 milestone Dec 6, 2016
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jreback commented Dec 6, 2016

thanks team!

cc @mrocklin
cc @mikegraham

@jreback jreback changed the title BUG: fixe hash collisions for from int overflow BUG: fix hash collisions for from int overflow Dec 6, 2016
@jreback jreback added the Numeric Operations Arithmetic, Comparison, and Logical operations label Dec 6, 2016
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codecov-io commented Dec 6, 2016

Current coverage is 85.27% (diff: 100%)

Merging #14805 into master will increase coverage by <.01%

@@             master     #14805   diff @@
==========================================
  Files           144        144          
  Lines         50953      50953          
  Methods           0          0          
  Messages          0          0          
  Branches          0          0          
==========================================
+ Hits          43451      43452     +1   
+ Misses         7502       7501     -1   
  Partials          0          0          

Powered by Codecov. Last update 53bf1b2...707becf

@jreback jreback merged commit 51f725f into pandas-dev:master Dec 6, 2016
jorisvandenbossche pushed a commit that referenced this pull request Dec 15, 2016
* BUG: we don't like hash collisions in siphash

xref #14767

* This should be a 64-bit int, not an 8-bit int

* fix tests

(cherry picked from commit 51f725f)
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3 participants