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https://issues.apache.org/jira/browse/TIKA-3779?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17543486#comment-17543486
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Tilman Hausherr commented on TIKA-3779:
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Same problem in the GribParser.
> Temp file leftover in PDFParser.parse()
> ---------------------------------------
>
> Key: TIKA-3779
> URL: https://issues.apache.org/jira/browse/TIKA-3779
> Project: Tika
> Issue Type: Bug
> Components: parser
> Affects Versions: 2.4.0
> Reporter: Tilman Hausherr
> Priority: Minor
>
> I've wondered where the many "apache-tika-" files in the temp directory came
> from. It turns out that they are all (or most) PDF files so I looked at the
> PDF parser module. After looking at the file sizes and getting a file name I
> focused on the test {{PDFParserTest.testSortByPosition()}} where the first 2
> parse tests have a leftover file and the 3rd one doesn't.
> The difference is that in the third one, {{PDFParser.parse()}} gets a
> {{TikaInputStream}} as parameter. {{TikaInputStream().get()}} returns its
> parameter. But in the first two, it creates a new object, which is never
> closed. So the resource cleanup is never done.
> Adding
> {code}
> if (!(tstream instanceof TikaInputStream)) {
> tstream.close();
> }
> {code}
> fixes this, i.e. no leftover files after running PDFParserTest.
> There's a null check in that method, but later the object is used without a
> null check. So either the null check isn't needed, or there is an NPE risk.
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