parpool warning: A task was unexpectedly found in state: Unavailable.

The program still works correctly, but I cannot explai the warning

Starting parallel pool (parpool) using the 'local' profile ...

Warning: A task was unexpectedly found in state: Unavailable.

> In parallel.cluster.Local/deriveJobStateFromTasks (line 29)

In parallel.cluster.Local/getJobState (line 179)

In parallel.cluster.CJSCluster/hGetJobState (line 358)

In parallel.internal.cluster.CJSJobMixin/hGetStateEnum (line 144)

In parallel.Job/get.StateEnum (line 238)

In parallel.Job/get.State (line 230)

In parallel.internal.customattr.CustomGetSet>iVectorisedGetHelper (line 128)

In parallel.internal.customattr.CustomGetSet>@(a,b,c)iVectorisedGetHelper(obj,a,b,c) (line 102)

In parallel.internal.customattr.CustomGetSet/doVectorisedGet (line 103)

In parallel.internal.customattr.CustomGetSet/hVectorisedGet (line 76)

In parallel.internal.customattr.GetSetImpl>iAccessProperties (line 322)

In parallel.internal.customattr.GetSetImpl>iGetAllPropertiesVec (line 264)

In parallel.internal.customattr.GetSetImpl.getImpl (line 133)

In parallel.internal.customattr.CustomGetSet>iHetFunGetFunction (line 154)

In parallel.internal.customattr.CustomGetSet>@(o)iHetFunGetFunction(o,props) (line 139)

In parallel.internal.cluster.hetfun (line 46)

In parallel.internal.customattr.CustomGetSet>iHetFunGetProperty (line 139)

In parallel.internal.customattr.CustomGetSet/get (line 38)

In parallel.internal.pool.InteractiveClient/pRemoveOldJobs (line 476)

In parallel.internal.pool.InteractiveClient/start (line 317)

In parallel.Pool>iStartClient (line 796)

In parallel.Pool.hBuildPool (line 585)

In parallel.internal.pool.doParpool (line 18)

In parpool (line 98)

In utils.SERVER (line 5)

Connected to the parallel pool (number of workers: 32).

Answer 1

[Mirko Job]

You have to delete the folder "local_scheduler_data" from "C:\Users\[your pc]\AppData\Roaming\MathWorks\MATLAB"

Answer 2

[Enrique Rodriguez Sebastian]

Hi all!

I have similar warning:

Warning: A task was unexpectedly found in state: Unavailable.

> In parallel.cluster.Local/deriveJobStateFromTasks (line 29)

In parallel.cluster/Local/getJobState (line 174)

In parallel.cluster/CJSCluster/hGetJobState (line 375)

In parallel.internal.cluster/CJSJobMixin/hGetStateEnum (line 175)

In parallel.Job.get.StateEnum (line 242)

In parallel.Job.get.State (line 234)

In parallel.internal.customattr.CustomGetSet>iVectorisedGetHelper (line 128)

In parallel.internal.customattr.CustomGetSet>@(a,b,c)iVectorisedGetHelper(obj,a,b,c) (line 102)

In parallel.internal.customattr/CustomGetSet/doVectorisedGet (line 103)

In parallel.internal.customattr/CustomGetSet/hVectorisedGet (line 76)

In parallel.internal.customattr.GetSetImpl>iAccessProperties (line 322)

In parallel.internal.customattr.GetSetImpl>iGetAllPropertiesVec (line 264)

In parallel.internal.customattr/GetSetImpl/getImpl (line 133)

In parallel.internal.customattr.CustomGetSet>iHetFunGetFunction (line 154)

In parallel.internal.customattr.CustomGetSet>@(o)iHetFunGetFunction(o,props) (line 139)

In parallel.internal.cluster.hetfun (line 46)

In parallel.internal.customattr.CustomGetSet>iHetFunGetProperty (line 139)

In parallel.internal.customattr/CustomGetSet/get (line 38)

In parallel.internal.pool/InteractiveClient/pRemoveOldJobs (line 468)

In parallel.internal.pool/InteractiveClient/start (line 311)

In parallel.internal.pool.AbstractClusterPool>iStartClient (line 826)

In parallel.internal.pool/AbstractClusterPool/hBuildPool (line 596)

In parallel.internal.pool.doParpool (line 20)

In parpool (line 122)

In parallel.internal.pool/PoolArrayManager/getOrAutoCreateWithCleanup (line 58)

In pctTryCreatePoolIfNecessary (line 28)

In parallel_function (line 418)

But I couldn´t find the folder "local_scheduler_data" from "C:\Users\[your pc]\AppData\Roaming\MathWorks\MATLAB"

In that path I have: local_cluster_jobs, R2020a and R2020a_licenses folders

What can I do to solve it?

[Antonios Armaou]

I have the same problem.