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From "Tim Allison (Jira)" <j...@apache.org>
Subject [jira] [Commented] (TIKA-3009) XML Parser reset() detection no working in weblogic 12.2.1.3
Date Thu, 12 Dec 2019 13:48:00 GMT

    [ https://issues.apache.org/jira/browse/TIKA-3009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16994687#comment-16994687
] 

Tim Allison commented on TIKA-3009:
-----------------------------------

[~nick], I was going to go with "exciting".  To confirm, you can't control which SAXParser
is used by, e.g., -Djavax.xml.parsers._SAXParserFactory_

> XML Parser reset() detection no working in weblogic 12.2.1.3
> ------------------------------------------------------------
>
>                 Key: TIKA-3009
>                 URL: https://issues.apache.org/jira/browse/TIKA-3009
>             Project: Tika
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.20, 1.21, 1.22, 1.23
>         Environment: JDK 1.8.0_231
> Oracle Weblogic Server 12.2.1.3
>            Reporter: Daniel
>            Priority: Critical
>
> Starting with tika 1.20 the org.apache.tika.utils.XMLReaderUtils try to detect if a XML
parser supports the reset() functionality by calling reset() during the poolParser creation
and watching for a UnsupportedOperationException.
> This unfortunately does not work in weblogic server as the attained RegistryParser itself
caches underlying SAX parsers. Only after first use the reset() of the underlying SAXParser
is called and will produce the UnsupportedOperationException. A first call to reset() will
not produce this exception and XMLReaderUtils thinks, the parser supports reset() which in
effect is not true.
> This results in exhaustion of the parser pool and intermittent errors and delays in processing
as the pool is reset when a parser is not available after 5 minutes.



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