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https://issues.apache.org/jira/browse/OLINGO-1618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17838615#comment-17838615
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Punith DG commented on OLINGO-1618:
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Hi, Anybody checked or facing this issue? Any reply will be much appreciated.
Thanks
> Performance degradation with read entity api from version 4.9.0
> ---------------------------------------------------------------
>
> Key: OLINGO-1618
> URL: https://issues.apache.org/jira/browse/OLINGO-1618
> Project: Olingo
> Issue Type: Question
> Components: odata4-client
> Affects Versions: (Java) V4 4.9.0
> Reporter: Punith DG
> Priority: Major
>
> Hi Olingo Communtiy,
> We use Olingo libraries to parse OData responses.
> Recently we have upgraded the Olingo libraries from 4.2.0 to 4.9.0 version.
> After upgrading the jars we are seeing a huge performance impact while
> reading the entity set form the input stream of back-end response.
> We are specifically talking about following API that is getting slow
> *org.apache.olingo.client.core.serialization.ODataReaderImpl.readEntitySet(InputStream,
> ContentType)*
> Previously, with Olingo jars *version 4.2.0* it was taking around *30sec* to
> read and parse the entityset.
> With upgraded Olingo jars *version 4.9.0* it is taking around *2min 30 sec*
> to parse the same size of data.
> Following is the list of jars that we have upgraded.
> odata-client-api-4.9.0.jar
> odata-client-core-4.9.0.jar
> odata-commons-api-4.9.0.jar
> odata-commons-core-4.9.0.jar
> We have updated these jars to latest Olingo library version (5.0.0) but still
> the same slowness was observed.
> We also tried various combination of jackson-databind library version and
> checked if it impacts the performance but it did not help.
> As shown below, all these combinations took long time to complete
> With jackson-databind (2.10.1) and olingo jars(4.9.0) time taken: *2min 29s*
> With jackson-databind(2.13.1) and olingo jars(4.9.0) time taken: *3min 3s*
> With jackson-databind(2.13.1) and olingo jars(5.0.0) time taken: *2min 20s*
> While checking the commits around serialization I see this Jira number not
> sure if this fix is related and can fix the slowness issue
> https://issues.apache.org/jira/browse/OLINGO-1609
> Highly appreciate your quick response.
>
> Thanks & best regards,
> Punith
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