Oleg Zhurakousky created NIFI-1680:
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Summary: Consider usage of direct buffers when splitting content
stream
Key: NIFI-1680
URL: https://issues.apache.org/jira/browse/NIFI-1680
Project: Apache NiFi
Issue Type: Improvement
Reporter: Oleg Zhurakousky
Assignee: Oleg Zhurakousky
We have several use cases where a content of a single FlowFile is split within
a single cycle (i.e., _onTrigger()_). An example is PutKafka.
Such splitting involves parsing of a content InputStream into chunks
represented as byte[]. Currently we are using custom buffer
(_org.apache.nifi.stream.io.ByteArrayOutputStream_) to build byte[].
There are several potential areas of improvement here:
1. For every cycle we are creating a new instance of _ByteArrayOutputStream_
which essentially reallocates the buffer used to build byte[].
2. The buffer itself is allocated on the heap
3. Similar to _ByteArrayOutputStream_, the _BufferedInputStream_ is also
created for each cycle where with some customization it could be reused.
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