[NodeJS] undefined error when Redis plugin is used in nodejs agent

[DanielYWoo]

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Bug

• Which version of SkyWalking, OS, and JRE?
  NodeJS module skywalking-backend-js 0.3.0

• What happened?
  throws an error

TypeError: Cannot read property 'select' of undefined
  at Redis.Cls.<computed> [as sendCommand] (/home/jack/app/node_modules/skywalking-backend-js/lib/plugins/IORedisPlugin.js:53:67)

[kezhenxu94]

Hi @DanielYWoo , thanks for reporting this, can you check what's the difference between our tests https://github.com/apache/skywalking-nodejs/blob/163a70d4b8b863d063b7d96cacb5641730eb48b7/tests/plugins/ioredis/server.ts and your use case? Our test case passed and we need some input to see what's wrong

[wu-sheng]

No update in months.

[zhgtot]

I met this error too. It happens when you conect a redis cluster not single redis node.
In my code, I init the redis client like this

[DanielYWoo]

I encounter this problem with Redis cluster too.