Ordering of redis values when using hvals

[Sridhar Iyer]

Hi all,

I'm using HMSET to store some values in redis, and then using HVALS to get the values in order. However if one of the values entered is longer, the ordering is no longer honored. Is there a way to get around this issue:

127.0.0.1:6379[1]> hmset abc3 "tag" "1111111" "hset" "22222222222222222222222222222222" "ncounters"  "3" "counters" "44444444444444444444444444444444444444444444444444444444444555:44444444444444444444444444444444444444444444444444444444444555:" "ckey" "5555555"

OK

127.0.0.1:6379[1]> hvals abc3

1) "22222222222222222222222222222222"

2) "44444444444444444444444444444444444444444444444444444444444555:44444444444444444444444444444444444444444444444444444444444555:"

3) "3"

4) "1111111"

5) "5555555"

if the "444...." string is smaller, I get the values in order. Redis documentation says that strings should be less that 512MB which this obviously is. 

Any pointers would be helpful.

Regards,

Sridhar

(I'm using redis-cli 2.8.17 on ubuntu 12.04 3.5.0-54 compiled on 64 bit).

[Itamar Haber]

Redis Hashes do not provide an internal order and HVALS' reply sorting isn't guaranteed. If you need the values from a Hash sorted, you can use a Lua script or do the sorting in the application. 

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[Sridhar Iyer]

Ok thanks. 

I had my application depend on the insertion order of HSET to get HVALS back in the same order. I guess now my application has to do a HGETALL and then do a string compare to assign value to the proper struct attribute :(

Regards,

Sridhar