Hi,
Afaics it's likely a combination/interaction of bugs and fixes between:
* the initial HS code
* 5a031a5556ff83b8a9646892715d7fef415b83c3
* f44eedc3f0f347a856eea8590730769125964597
But that'd mean nobody noticed it during 9.3's beta...
Greetings,
Andres Freund
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Andres Freund http://www.2ndQuadrant.com/
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