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https://issues.apache.org/jira/browse/EMAIL-207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jaeheon-Lee closed EMAIL-207.
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Good! I've confirmed that the problem has been solved!
> Don't waste memory in MimeMessageParser#createDataSource()
> ----------------------------------------------------------
>
> Key: EMAIL-207
> URL: https://issues.apache.org/jira/browse/EMAIL-207
> Project: Commons Email
> Issue Type: Improvement
> Affects Versions: 1.5
> Reporter: Jaeheon-Lee
> Priority: Major
> Fix For: 1.6.0
>
>
> *Found*
> Hello.
> OOM occurred in the mail service developed using Apache-commons-email.
> I debugged and found that the mail lookup function was wasting memory!
> *Problem*
> Below is a test for reproducing the problem.
> {code:java}
> @Test
> void memoryTest() throws Exception {
> FileInputStream is = new FileInputStream("/test/oom.eml");
> Session session = Session.getInstance(System.getProperties());
> MimeMessage mimeMessage = new MimeMessage(session, is);
> MimeMessageParser parser = new MimeMessageParser(mimeMessage).parse();
> } {code}
> Below is the memory usage.
>
> !https://user-images.githubusercontent.com/63458653/258811815-721ddcb7-b30b-4688-afc4-6f773c85b6a8.png|width=715,height=148!
> I was thinking of using Attachments as a buffer for OutputStream when I
> really need them.
> However, it is becoming a problem by putting all bytes[] in memory.
> !https://user-images.githubusercontent.com/63458653/258811728-67c7f208-fc4a-4954-823a-3a6904d21dd7.png|width=552,height=421!
> !https://user-images.githubusercontent.com/63458653/258811747-8b144f5a-2b15-4c9a-a070-4d179e0b1d09.png|width=553,height=263!
>
> Thanks.
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