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From Olve Sæther Hansen (JIRA) <j...@apache.org>
Subject [jira] Updated: (ABDERA-277) Excessive calls to flush() on the Writer responsibler for writing JSONStream data.-
Date Thu, 06 Jan 2011 12:38:45 GMT

     [ https://issues.apache.org/jira/browse/ABDERA-277?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Olve Sæther Hansen updated ABDERA-277:
--------------------------------------

    Attachment: Removed_unnecessary_calls_to_flush()_on_the_Writer_instance_writing_the_JSONStream_.patch

Patch that moves all flushes to a single flush in the JSONWriter after the structure has been
written.

> Excessive calls to flush() on the Writer responsibler for writing JSONStream data.-
> -----------------------------------------------------------------------------------
>
>                 Key: ABDERA-277
>                 URL: https://issues.apache.org/jira/browse/ABDERA-277
>             Project: Abdera
>          Issue Type: Bug
>    Affects Versions: 0.4.0, 1.0, 1.1, 1.1.1
>         Environment: Seen on Jetty7 and in local unit-tests.
>            Reporter: Olve Sæther Hansen
>            Priority: Critical
>         Attachments: Removed_unnecessary_calls_to_flush()_on_the_Writer_instance_writing_the_JSONStream_.patch
>
>
> When I am creating a feed with a lot of entries, say 2-3000, the JSON serialization is
horribly slow. XML serialisation is very fast in comparison.
> I am using Abdera together with Jersey, via Jersey integration. 
> Using curl and Jersey content-negotiation the xml-file downloaded instantely. The json-file
took as much as a minute and a half, and as little as 22 seconds. 
> Some investigation lead me to the excessive calls to flush in the JSONStream-class.
> https://github.com/apache/abdera/blob/abdera-1.1.1/extensions/json/src/main/java/org/apache/abdera/ext/json/JSONStream.java
> My proposal for a fix is in the attatched patch.
> I hope someone can put this in as soon as possible. I will have to make a local "fork"
for this fix until it is released through proper channels. 

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