bug? keyPrefix not added to the KEYS command

Hi, i have a problem with the KEYS command and the use of keyPrefix. It seems that using a prefixed connection the prefix is not passed to the KEYS command.

I created a simple snippet of code to reproduce the problem.

'use strict';
let Promise = require( 'bluebird' );
let Redis = require( 'ioredis' );

const prefix = 'NS:'
// Create an unprefixed connection
let redisNP = new Redis();
// Create an prefixed connection
let redisP = new Redis( {
  keyPrefix: prefix,
} );


let key = 'test:namespace:test';
let matchKey = 'test:*:test';
const data = {
  mytest: 'true',
  'my test2': 5,
};

// Add a namespaced(prefixed) key
redisP.hmset( key, data )
.then( () => {
  // Issue the keys command to the connections
  return Promise
  .props( {
    // Try the prefixed connection
    prefix: redisP.keys( matchKey ),
    // Try the unprefixed connection
    noPrefix: redisNP.keys( matchKey ),
    // Try to manual add the prefix to the  unprefixed connection
    manualPrefix: redisNP.keys( prefix+matchKey ),
  } );
} )
.then( results => {
  // I have 0 prefixed keys, should be 1
  console.log( 'Should be 1', results.prefix.length );
  // I have 0 unprefixed keys, OK
  console.log( 'Should be 0', results.noPrefix.length );
  // I have 1 manually prefixed keys, OK
  console.log( 'Should be 1', results.manualPrefix.length );
  console.log( 'Results: %j', results );
} )
.catch( err => console.error( err, err.stack ) )
.then( () => {
  return [
    redisP.quit(),
    redisNP.quit(),
  ];
} );

[luin]

Actually it’s not a bug. ioredis relies on the COMMAND command of Redis to get the position of the keys in a command’s parameters. For keys (as well as scan) command, Redis tells ioredis that it doesn’t contain a key, so that ioredis won’t prefix it.

[Volox]

Thanks to all for the support, I see there is no easy solution for this.