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https://issues.apache.org/jira/browse/TIKA-521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12916518#action_12916518
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Nick Burch commented on TIKA-521:
---------------------------------

Excel files really really munch memory. XLSX is worse than XLS, as the xml 
processing into objects takes lots of memory.

Some files are worse than others, depends on the kinds of things in them. I'd 
suggest you just up your heap size.

> OutOfMemoryError Parsing XSLX File
> ----------------------------------
>
>                 Key: TIKA-521
>                 URL: https://issues.apache.org/jira/browse/TIKA-521
>             Project: Tika
>          Issue Type: Bug
>    Affects Versions: 0.7, 0.8
>            Reporter: Stephen Duncan Jr
>         Attachments: memory-test.xlsx
>
>
> I have several XSLX files I'm trying to parse with Tika that are failing with 
> an OutOfMemoryError even when using  a large heap size.  For instance the 
> attached 1.26MB excel file fails using a 512MB heap.

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