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https://issues.apache.org/jira/browse/TIKA-4932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18119419#comment-18119419
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ASF GitHub Bot commented on TIKA-4932:
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tballison merged PR #3258:
URL: https://github.com/apache/tika/pull/3258
> PipesForkParser: metadata passed to parse() overwrites the fork's parse
> results
> -------------------------------------------------------------------------------
>
> Key: TIKA-4932
> URL: https://issues.apache.org/jira/browse/TIKA-4932
> Project: Tika
> Issue Type: Task
> Reporter: Tim Allison
> Priority: Major
>
> :robot: :
> PipesForkParser.parse(tis, metadata, context) sends the caller's metadata as
> the tuple's user metadata. EmitHandler.injectUserMetadata() then overwrites
> the parsed values with it. Callers pass
> Content-Type and resourceName as hints for detection, as they would to
> Parser.parse(). What they get back is their own hint in place of the detected
> type. For example, a PDF served as text/html;
> charset=UTF-8 comes back with the raw header value as its Content-Type.
> The overwrite is intended for async and server users, who inject IDs this
> way, so the fix belongs in PipesForkParser: metadata the caller passes should
> be used for detection and parsing, not
> injected back into the result. Tell users about the behavior change in the
> release notes.
>
> Found by [~dpol1] on apache/stormcrawler#2183.
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