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https://issues.apache.org/jira/browse/IO-251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14996695#comment-14996695
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Sebb commented on IO-251:
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The change to readFileToByteArray caused a regression, see IO-453
> Add new read method "toByteArray" to handle InputStream with known size
> -----------------------------------------------------------------------
>
> Key: IO-251
> URL: https://issues.apache.org/jira/browse/IO-251
> Project: Commons IO
> Issue Type: Improvement
> Components: Utilities
> Affects Versions: 1.4
> Reporter: Marco Albini
> Priority: Minor
> Fix For: 2.1
>
> Attachments: IO-251_toByteArray.patch
>
>
> I suggest adding a new method toByteArray(InputStream input, int size) to
> IoUtils to handle known size InputStream (e.g. files).
> Current implementation based on copy method consumes more memory than
> necessary (at least the double) to transform a InputStream into a byte array.
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