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https://issues.apache.org/jira/browse/HADOOP-14501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16041163#comment-16041163
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Andrew Wang commented on HADOOP-14501:
--------------------------------------
FWIW solr uses woodstox, it seems to be second fastest after aalto, and more
mature:
https://github.com/FasterXML/woodstox
https://stackoverflow.com/a/11782775 (SO answer from author of woodstox and
aalto)
> aalto-xml cannot handle some odd XML features
> ---------------------------------------------
>
> Key: HADOOP-14501
> URL: https://issues.apache.org/jira/browse/HADOOP-14501
> Project: Hadoop Common
> Issue Type: Bug
> Components: conf
> Affects Versions: 2.9.0, 3.0.0-alpha4
> Reporter: Andrew Wang
> Priority: Blocker
>
> [~hgadre] tried testing solr with a Hadoop 3 client. He saw various test case
> failures due to what look like functionality gaps in the new aalto-xml stax
> implementation pulled in by HADOOP-14216:
> {noformat}
> [junit4] > Throwable #1: com.fasterxml.aalto.WFCException: Illegal XML
> character ('ΓΌ' (code 252))
> ....
> [junit4] > Caused by: com.fasterxml.aalto.WFCException: General entity
> reference (&bar;) encountered in entity expanding mode: operation not (yet)
> implemented
> ...
> [junit4] > Throwable #1: org.apache.solr.common.SolrException: General
> entity reference (&wacky;) encountered in entity expanding mode: operation
> not (yet) implemented
> {noformat}
> These were from the following test case executions:
> {noformat}
> NOTE: reproduce with: ant test -Dtestcase=DocumentAnalysisRequestHandlerTest
> -Dtests.method=testCharsetOutsideDocument -Dtests.seed=2F739D88D9C723CA
> -Dtests.slow=true -Dtests.locale=und -Dtests.timezone=Atlantic/Faeroe
> -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
> NOTE: reproduce with: ant test -Dtestcase=MBeansHandlerTest
> -Dtests.method=testXMLDiffWithExternalEntity -Dtests.seed=2F739D88D9C723CA
> -Dtests.slow=true -Dtests.locale=en-US -Dtests.timezone=US/Aleutian
> -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
> NOTE: reproduce with: ant test -Dtestcase=XmlUpdateRequestHandlerTest
> -Dtests.method=testExternalEntities -Dtests.seed=2F739D88D9C723CA
> -Dtests.slow=true -Dtests.locale=hr -Dtests.timezone=America/Barbados
> -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
> NOTE: reproduce with: ant test -Dtestcase=XmlUpdateRequestHandlerTest
> -Dtests.method=testNamedEntity -Dtests.seed=2F739D88D9C723CA
> -Dtests.slow=true -Dtests.locale=hr -Dtests.timezone=America/Barbados
> -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
> {noformat}
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