[infinispan-issues] [JBoss JIRA] (ISPN-9501) AbstractCacheStream.performOperationRehashAware() can hang

[William Burns (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-9501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13631778#comment-13631778 ] 

William Burns commented on ISPN-9501:
-------------------------------------

#1 is a simple fix: https://github.com/danberindei/infinispan/blob/e020c8bccf9ba0b7af8a0983c4f058f7737fc78a/core/src/main/java/org/infinispan/stream/impl/AbstractCacheStream.java#L323 needs to be changed to {code} segmentsToProcess = IntSets.mutableCopyFrom(remoteResults.lostSegments); {code}. Unfortunately https://github.com/danberindei/infinispan/blob/e020c8bccf9ba0b7af8a0983c4f058f7737fc78a/core/src/main/java/org/infinispan/stream/impl/AbstractCacheStream.java#L405 had it correct, both references were not updated properly :(

> AbstractCacheStream.performOperationRehashAware() can hang
> ----------------------------------------------------------
>
>                 Key: ISPN-9501
>                 URL: https://issues.jboss.org/browse/ISPN-9501
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 9.4.0.CR1
>            Reporter: Dan Berindei
>            Assignee: Dan Berindei
>             Fix For: 9.4.0.Final
>
>
> There are actually 2 different issues:
> # {{segmentsToProcess}} reuses the {{remoteResults.lostSegments}} {{ConcurrentSmallIntSet}} instance, so when {{remoteResults.lostSegments}} is cleared, {{segmentsToProcess}} is also cleared.
> # Because of ISPN-9500, {{segmentsToProcess.isEmpty()}} keeps returning {{false}}, so {{performOperationRehashAware()}} keeps waiting for a newer topology. 



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