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Unable to lock multi resources in cluster mode

See original GitHub issue

node-relock version: 4.1.0 ioredis version: 4.14.1

Hi, I’m trying to use node-redlock with redis-cluster. When locking multi resources, I got a “LockError” exception. It exceeds the 10 attempts to lock.

Here’s my code

  let client = new redis.Cluster([
        {
            ip: '127.0.0.1',
            port: '7001'
        },
        {
            ip: '127.0.0.1',
            port: '7002'
        },
        {
            ip: '127.0.0.1',
            port: '7003'
        }
    ])
    let lk = new redlock([client])
    let l = null
    l = await lk.lock(['lk1', 'lk2'], 1000) //failure
    //l = await lk.lock(['lk'], 1000)  //success
    let res = await client.get('foo')

(node:28707) UnhandledPromiseRejectionWarning: LockError: Exceeded 10 attempts to lock the resource "lk1,lk2".
    at /home/sx/projects/nodejs/njproj1/node_modules/redlock/redlock.js:411:20
    at tryCatcher (/home/sx/projects/nodejs/njproj1/node_modules/bluebird/js/release/util.js:16:23)
    at Promise.errorAdapter [as _rejectionHandler0] (/home/sx/projects/nodejs/njproj1/node_modules/bluebird/js/release/nodeify.js:35:34)
    at Promise._settlePromise (/home/sx/projects/nodejs/njproj1/node_modules/bluebird/js/release/promise.js:601:21)
    at Promise._settlePromise0 (/home/sx/projects/nodejs/njproj1/node_modules/bluebird/js/release/promise.js:649:10)
    at Promise._settlePromises (/home/sx/projects/nodejs/njproj1/node_modules/bluebird/js/release/promise.js:725:18)
    at _drainQueueStep (/home/sx/projects/nodejs/njproj1/node_modules/bluebird/js/release/async.js:93:12)
    at _drainQueue (/home/sx/projects/nodejs/njproj1/node_modules/bluebird/js/release/async.js:86:9)
    at Async._drainQueues (/home/sx/projects/nodejs/njproj1/node_modules/bluebird/js/release/async.js:102:5)
    at Immediate.Async.drainQueues (/home/sx/projects/nodejs/njproj1/node_modules/bluebird/js/release/async.js:15:14)
    at runCallback (timers.js:794:20)
    at tryOnImmediate (timers.js:752:5)
    at processImmediate [as _immediateCallback] (timers.js:729:5)

Issue Analytics

State:
Created 4 years ago
Comments:16 (2 by maintainers)

Top GitHub Comments

3reactions

Prabh-Kangcommented, Feb 15, 2022

@RuoFeng2015 @shonmorgun . I faced the same issue and going through the documentation revealed that the lock can only be applied to keys which have not been set yet. If you are trying to lock a key which is already redis db, then the lock execution will always fail. Try to run the same code with a new key.

You can find the info in attached screenshot on documentation for 4.2.0 on npmjs Screenshot 2022-02-15 at 1 54 12 PM

3reactions

shonmorguncommented, Jan 28, 2022

This is still an issue guys

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