[infinispan-issues] [JBoss JIRA] (ISPN-7990) Provide a way to remove an entry from all indexes

[Gustavo Fernandes (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-7990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13428120#comment-13428120 ] 

Gustavo Fernandes commented on ISPN-7990:
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bq. you won't know which indexes need to be cleaned up

That's the issue this JIRA is trying to address. As I found out recently, there are some corner cases (considered rare, during state transfer) where it's not possible to know the type.

bq. even cleaning up "all indexes" by id is troublesome as you might not have a full list to define "all indexes"

I assume the QueryKnownClasses object would have all types stored? If not, doesn't the searchFactory know about all existent indexes?

bq. without the type you don't know how to encode the key -> not matching the right key might lead to various mismatches, like delete the wrong data or not deleting it at all

The key encoding is done by the KeyTransformationHandler which is cache-scoped; so I assume the id is consistent across all indexes. 

bq. what if the index was created by an instance having a different / out of date configuration 

How this could happen? I have a feeling if clusters have caches with outdated configurations indexing would not be the only problem



> Provide a way to remove an entry from all indexes
> -------------------------------------------------
>
>                 Key: ISPN-7990
>                 URL: https://issues.jboss.org/browse/ISPN-7990
>             Project: Infinispan
>          Issue Type: Enhancement
>          Components: Embedded Querying
>    Affects Versions: 9.1.0.Beta1
>            Reporter: Gustavo Fernandes
>            Assignee: Gustavo Fernandes
>
> This may be needed in some non frequent scenarios (happening during topology changes) where a write command cannot obtain the previous value to remove it from the index.



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