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https://issues.apache.org/jira/browse/TINKERPOP-2195?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stephen mallette closed TINKERPOP-2195.
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Resolution: Won't Do
solved by way of workarounds described on the PR.
> Add finally block in HttpGremlinEndpointHandler to commit transaction
> ---------------------------------------------------------------------
>
> Key: TINKERPOP-2195
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2195
> Project: TinkerPop
> Issue Type: Improvement
> Components: server
> Affects Versions: 3.4.2
> Reporter: Moayad Alyaghshi
> Priority: Major
>
> The HttpGremlinEndpointHandler is attempting to commit the transaction before
> serialisation to be consistent with how things work for websocket, so the
> transaction will be committed regardless of the serialisation result.
> This's causing a performance problem to our implementation which depends on
> JPA, because serialisation will require to read the entities again from the
> database since the transaction has been committed and the objects are still
> managed by the entity manager.
> An improvement is to do the serialisation first, and add a finally block to
> the try...catch statement, where transaction commit can take place.
>
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