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https://issues.apache.org/jira/browse/THRIFT-5149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17065054#comment-17065054
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Antoine Pitrou commented on THRIFT-5149:
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I suppose preallocating makes decoding faster (you don't have to grow check the
current size for each decoded value and eventually resize the vector).
> Limit container byte size
> -------------------------
>
> Key: THRIFT-5149
> URL: https://issues.apache.org/jira/browse/THRIFT-5149
> Project: Thrift
> Issue Type: Wish
> Components: C++ - Library
> Reporter: Antoine Pitrou
> Priority: Major
>
> The C++ library currently takes a container size limit which can avoid
> instantiating too large containers, limiting the possibility of memory bombs.
> However, some container elements may be very large and preallocating such a
> large container may blow up memory even if the number of elements "looks"
> reasonable. This allows for very small files to blow up memory (and therefore
> to be potential denial-of-service material).
> It would be nice to have an additional parameter to limit in-memory container
> byte size.
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