[OLINGO-973] WstxParsingException while parsing the OData response

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Not A Problem
• Affects Version/s: V2 2.0.7
• Fix Version/s: V2 2.0.7
• Component/s: odata2-core
• Environment: Cent OS
• Assignee: Unassigned
• Reporter: Rahuldeb Barman
• Created: 21/Jun/16 14:29
• Updated: 11/Jul/16 09:14
• Resolved: 11/Jul/16 09:14

Description

WstxParsingException while parsing the OData response.

<?xml version="1.0" encoding="utf-8"?><feed xml:base="https://XXX.crm.ondemand.com/sap/byd/odata/v1/c4codata/" xmlns="http://www.w3.org/2005/Atom" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices"><id>https://XXX.crm.ondemand.com/sap/byd/odata/v1/c4codata/AccountCollection</id><title type="text">AccountCollection</title><updated>2016-06-21T13:53:36Z</updated><author><name/></author><link href="AccountCollection" rel="self" title="AccountCollection"/><m:count>751</m:count><entry m:etag="W/"datetimeoffset'2016-06-15T12%3A48%3A51.8255480Z'""><id>https://XXX.crm.ondemand.com/sap/byd/odata/v1/c4codata/AccountCollection('00163E038C2E1EE299C1BB0BE9398F9B')</id><title type="text">AccountCollection('00163E038C2E1EE299C1BB0BE9398F9B')</title><updated>2016-06-21T13:53:36Z</updated><category term="c4codata.Account" scheme="http://schemas.microsoft.com/ado/2007/08/dataservices/scheme"/><link href="AccountCollection('00163E038C2E1EE299C1BB0BE9398F9B')" rel="edit" title="Account"/><content type="application/xml"><m:properties><d:AccountName>Porter LLC</d:AccountName><d:ObjectID>00163E038C2E1EE299C1BB0BE9398F9B</d:ObjectID></m:properties></content></entry></feed>

When attempting to read above message, an EntityProviderException is thrown as shown below.

[6255] at org.apache.olingo.odata2.api.ep.EntityProvider.readEntry(EntityProvider.java:714)
[6254] at org.apache.olingo.odata2.core.ep.ProviderFacadeImpl.readEntry(ProviderFacadeImpl.java:178)
[6253] at org.apache.olingo.odata2.core.ep.AtomEntityProvider.readEntry(AtomEntityProvider.java:374)
[6252] at org.apache.olingo.odata2.core.ep.consumer.XmlEntityConsumer.readEntry(XmlEntityConsumer.java:91)
[6251] at org.apache.olingo.odata2.core.ep.consumer.XmlEntryConsumer.readEntry(XmlEntryConsumer.java:87)
[6250] at com.ctc.wstx.sr.BasicStreamReader.nextTag(BasicStreamReader.java:1113)
[6249] at com.ctc.wstx.sr.StreamScanner.throwParseError(StreamScanner.java:461)
[6248] at com.ctc.wstx.sr.StreamScanner.constructWfcException(StreamScanner.java:630)
[6247] at [row,col

{unknown-source}

]: [1,1277]
[6246](IS) [CLS.0503.0120] 2016-06-21 18:15:22 IST ERROR: wraps: com.ctc.wstx.exc.WstxParsingException: Received event END_DOCUMENT, instead of START_ELEMENT or END_ELEMENT.
org.apache.olingo.odata2.api.ep.EntityProviderException: An exception of type 'WstxParsingException' occurred.

Note that I am using olingo 2.0.7 library (locally built using source code).
We have 3 environment setup, we have observed this error on one environment. When we run our code in debug mode it works fine.
Looks like this error is not constant. Some time it works, sometime WstxParsingException is seen.

What could be root cause and how to avoid this error. Any pointer? Please let me know.

Thanks in advance.