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From "Jerry Cwiklik (JIRA)" <...@uima.apache.org>
Subject [jira] [Commented] (UIMA-5791) UIMA-AS: fix client SAXParseException when deserializing metadata
Date Fri, 04 Jan 2019 18:15:00 GMT

    [ https://issues.apache.org/jira/browse/UIMA-5791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16734433#comment-16734433
] 

Jerry Cwiklik commented on UIMA-5791:
-------------------------------------

The service replies with metadata which begins with:

<?xml version="1.0" encoding="UTF-8"?>
<analysisEngineMetaData xmlns="http://uima.apache.org/resourceSpecifier">

..

I actually ran my client on win10 and service on Ubuntu and I am not seeing parsing exception

> UIMA-AS: fix client SAXParseException when deserializing metadata
> -----------------------------------------------------------------
>
>                 Key: UIMA-5791
>                 URL: https://issues.apache.org/jira/browse/UIMA-5791
>             Project: UIMA
>          Issue Type: Bug
>          Components: Async Scaleout
>            Reporter: Jerry Cwiklik
>            Assignee: Jerry Cwiklik
>            Priority: Major
>             Fix For: 2.10.4AS
>
>
> XML parser fails with SAXParseException when trying to deserialize service metadata.
The scenario which causes the error is:
> UIMA-AS client running on windows
> Service runs on linux
> The client sends getMeta request and receives a response from a service. The client tries
to deserialize the meta and gets:
> Jun 06, 2018 2:25:10 PM org.apache.uima.adapter.jms.client.BaseUIMAAsynchronousEngineCommon_impl$2
onMessageWARNING: org.apache.uima.util.InvalidXMLException: Invalid descriptor at <unknown
source>.at org.apache.uima.util.impl.XMLParser_impl.parse(XMLParser_impl.java:219)at org.apache.uima.util.impl.XMLParser_impl.parseResourceMetaData(XMLParser_impl.java:438)at
org.apache.uima.util.impl.XMLParser_impl.parseResourceMetaData(XMLParser_impl.java:420)at
org.apache.uima.adapter.jms.client.BaseUIMAAsynchronousEngineCommon_impl.handleMetadataReply(BaseUIMAAsynchronousEngineCommon_impl.java:1178)at
org.apache.uima.adapter.jms.client.BaseUIMAAsynchronousEngineCommon_impl$2.run(BaseUIMAAsynchronousEngineCommon_impl.java:2065)at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1160)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)at
java.lang.Thread.run(Thread.java:811)Caused by: org.xml.sax.SAXParseException: Invalid byte
1 of 1-byte UTF-8 sequence.at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)at
org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)at org.apache.uima.util.impl.XMLParser_impl.parse(XMLParser_impl.java:202)...
7 more
>  
> A workaround for the above was to set: -D"file.encoding-UTF-8" on the client.
> Review the code and provided a fix. Perhaps XML InputSource has a way to set encoding.
The default should be UTF-8. Seems like we need a new uima-as a new property (or command line
arg) to override the default in case a user needs different encoding.
>  



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