Hiredis: BZPOPMIN - "ERR unknown command 'BZPOPMIN'"

[roger-blain]

I am trying to execute the BZPOPMIN command:

"BZPOPMIN OP:QUEUE:iviu:p00390 OP:QUEUE:iviu:p00160 10"

It fails with:

"ERR unknown command 'BZPOPMIN'"

I have tried all sorts of variations, lower case, and "BZPOPMIN tests", same failure.

If i execute the command via redis-cli:
```
BZPOPMIN OP:QUEUE:iviu:p00160 OP:QUEUE:iviu:p00390 10
1) "OP:QUEUE:iviu:p00390"
2) "{"database

There are no issues.

Does anyone have any advice on next steps ?

[roger-blain]

I forgot to mention, I have tried both redisCommand and redisCommandArgv
If i substitute "BRPOP" I get a usual response for no data.

[itamarhaber]

Hello @Intellipower

Most likely your Redis server's version is lower than 5.

On Tue, Mar 12, 2019, 19:12 Intelipower [e-mail] wrote:

I forgot to mention, I have tried both redisCommand and redisCommandArgv
If i substitute "BRPOP" I get a usual response for no data.

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[michael-grunder]

Hey, @roger-blain

Are you absolutely certain you're connecting to the exact same Redis instance using hiredis as you are using redis-cli?

Or are you potentially double quoting the command in hiredis, like this:

// This will return: 'ERR unknown command `'BZPOPMIN'`
redisReply *r = redisCommand(c, "'BZPOPMIN' %s %d", "myzset", 1);

If you can, please post a small snippet of code illustrating how you're attempting to use hiredis, which might help us diagnose the issue.

[roger-blain]

Gents you are spot on, I was inadvertently connecting to my local V4 server, when I thought I was connecting to my cloud server V5!

Thanks so much!