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https://issues.apache.org/jira/browse/MINIFICPP-1644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Zink updated MINIFICPP-1644:
-----------------------------------
Issue Type: Bug (was: Improvement)
> ProcessSession::read ignores the size/offset of the flowfile
> ------------------------------------------------------------
>
> Key: MINIFICPP-1644
> URL: https://issues.apache.org/jira/browse/MINIFICPP-1644
> Project: Apache NiFi MiNiFi C++
> Issue Type: Bug
> Reporter: Martin Zink
> Assignee: Martin Zink
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
>
> The ProcessSession::read will read until the resource claims size, not the
> flowfiles size.
> If the flowfiles size/offset doesnt match the size/offset of its resource
> claim, this could cause problems. One way this could happend is using the
> _ProcessSession::clone(const std::shared_ptr<core::FlowFile> &parent, int64_t
> offset, int64_t size)_
> The behaviour is also dependant on the type of ContentRepository
> e.g.
> using FileSystemContentRepository or VolatileContentRepository
> {code:java}
> auto first_half_clone = session->clone(original_ff, 0,
> original_ff->getSize()/2);
> auto second_half_clone = session->clone(original_ff,
> original_ff->getSize()/2, original_ff->getSize()/2);
> session->read(original_ff, reader); // Reads foobar
> session->read(first_half_clone, reader); // Reads foobar expected foo
> session->read(second_half_clone, reader); // Reads bar
> {code}
> using DatabaseContentRepository
> {code:java}
> auto first_half_clone = session->clone(original_ff, 0,
> original_ff->getSize()/2);
> auto second_half_clone = session->clone(original_ff,
> original_ff->getSize()/2, original_ff->getSize()/2);
> session->read(original_ff, reader); // Reads foobar
> session->read(first_half_clone, reader); // Reads foobar expected foo
> session->read(second_half_clone, reader); // Reads foobar expected bar{code}
>
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