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Posted to dev@avro.apache.org by "Doug Cutting (JIRA)" <ji...@apache.org> on 2012/06/11 22:45:43 UTC

[jira] [Updated] (AVRO-1069) HttpTransceiver never closes its OutputStream, hinders java reuse of HTTP connections

     [ https://issues.apache.org/jira/browse/AVRO-1069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doug Cutting updated AVRO-1069:
-------------------------------

    Attachment: AVRO-1069.patch

Here's a patch that addresses this.
                
> HttpTransceiver never closes its OutputStream, hinders java reuse of HTTP connections
> -------------------------------------------------------------------------------------
>
>                 Key: AVRO-1069
>                 URL: https://issues.apache.org/jira/browse/AVRO-1069
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>            Reporter: Thomas Andrews
>         Attachments: AVRO-1069.patch
>
>
> The class org.apache.avro.ipc.HttpTransceiver opens an OutputStream and never explicitly closes it.  That seems like very bad behavior.
> I think you should also be closing the InputStream.
> In particular, Java has built-in the ability to keep HttpURLConnections open, and re-use them.  You might think that not closing these streams would help Java in this effort, but actually, the streams are not the raw connections, but wrappers.  The javadoc says: "Calling the close() methods on the InputStream or OutputStream of an HttpURLConnection after a request may free network resources associated with this instance but has no effect on any shared persistent connection."
> In other words, when you fail to close these streams, Java doesn't know you are done with the request, so it cannot re-use the connection.  You only end up able to re-use the connection when the HttpURLConnection gets garbage-collected.

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