[teiid-issues] [JBoss JIRA] (TEIIDSB-121) cpu utilization on 100% when generate openapi doc by metadata

[Steven Hawkins (Jira)]

    [ https://issues.jboss.org/browse/TEIIDSB-121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13792230#comment-13792230 ] 

Steven Hawkins commented on TEIIDSB-121:
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> And i can't get swagger.json at all. Only CPU utilization 100%.

I'll have a look using something similar to what you have provided.  More than likely we'd need to cut down on the amount of metadata generated.  A simple workaround would probably be to split your public facing schema up into several smaller ones.  

How deep are your relationships?  As I recall the openapi metadata generator only generates a single nested level, but I'll need to verify that.

> P.S. in stateless micro-service architecture we do not have persistence layer (FS).

You don't have to view this as state.  It's more akin to a cache than persistence.  For example you can use an emptyDir volume: https://kubernetes.io/docs/concepts/storage/volumes/#emptydir

> cpu utilization on 100% when generate openapi doc by metadata
> -------------------------------------------------------------
>
>                 Key: TEIIDSB-121
>                 URL: https://issues.jboss.org/browse/TEIIDSB-121
>             Project: Teiid Spring Boot
>          Issue Type: Bug
>          Components: datasource, OData
>    Affects Versions: 1.2.0
>            Reporter: Renat Eskenin
>            Priority: Major
>
> When i get request as 
> http://localhost:8080/odata/swagger.json or http://localhost:8080/odata/datasource/Account/swagger.json or http://localhost:8080/odata/datasource/swagger.json
> cpu utilization 100% and i do not get any response.
> We have 2 bad approach:
> 1. In org.teiid.olingo.web.OpenApiHandler:151 teiid create tmp file in filesystem.
> Its bad because in Docker k8s systems applications can't create any files in FS.
> 2. In org.apache.xalan.transformer.TransformerImpl:709 we get system freeze (CPU utilization 100% infinite)



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