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

[Renat Eskenin (Jira)]

    [ https://issues.jboss.org/browse/TEIIDSB-121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13796609#comment-13796609 ] 

Renat Eskenin commented on TEIIDSB-121:
---------------------------------------

605kb Edm has 20000 strings

typical propery

  <Property Name="system_modstamp" Type="Edm.DateTimeOffset" Nullable="false" DefaultValue="" Precision="6">
          <Annotation Term="teiid.NAMEINSOURCE">
            <String>"system_modstamp"</String>
          </Annotation>
          <Annotation Term="teiid.UPDATABLE">
            <Bool>true</Bool>
          </Annotation>
          <Annotation Term="teiid.SIGNED">
            <Bool>false</Bool>
          </Annotation>
        </Property>

Many

 <EntitySet Name="fund" EntityType="vertica.af_fund">
          <NavigationPropertyBinding Path="C_FOREIGN" Target="user"/>
          <NavigationPropertyBinding Path="C_FOREIGN_1" Target="user"/>
          <NavigationPropertyBinding Path="C_FOREIGN_2" Target="budget"/>
          <NavigationPropertyBinding Path="C_FOREIGN_3" Target="campaign_funds"/>
          <NavigationPropertyBinding Path="C_FOREIGN_4" Target="fund_request"/>
        </EntitySet>

and many

  <NavigationProperty Name="account_C_FOREIGN_12" Type="Collection(vertica.account)"></NavigationProperty>


Its all possible information...sorry.

> 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
>            Assignee: Steven Hawkins
>            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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