[jira] [Resolved] (AVRO-842) Internal NPE when accessing proxy to a closed server endpoint

["Doug Cutting (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AVRO-842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doug Cutting resolved AVRO-842.
-------------------------------

    Resolution: Fixed

I committed this.  Thanks, James!

> Internal NPE when accessing proxy to a closed server endpoint
> -------------------------------------------------------------
>
>                 Key: AVRO-842
>                 URL: https://issues.apache.org/jira/browse/AVRO-842
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.5.1
>         Environment: generic
>            Reporter: Holger Hoffstätte
>            Assignee: James Baldassari
>             Fix For: 1.5.2
>
>         Attachments: AVRO-842-v2.patch, AVRO-842-v3.patch, AVRO-842.patch, CrashTest.java
>
>
> For development of an avro-based transport for remote OSGi services I had to wrap & unwind transport-level exceptions into proper exceptions thrown to a client. One such scenario is accessing a disconnected/dead endpoint, which should be a detectable condition. This works fine with the SaslSocketTransceiver (where my wrapper can properly detect the IO Exception), but not with Netty which hiccups with an internal NPE.
> Generally speaking any transport-level and remote-endpoint exceptions must not only be clearly detectable (either directly by client code or wrapper infrastructure around avro) but also distinguishable from another.

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