Andy LoPresto created NIFI-7002:
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Summary: Handle large files internally in EC toolkit
Key: NIFI-7002
URL: https://issues.apache.org/jira/browse/NIFI-7002
Project: Apache NiFi
Issue Type: Sub-task
Components: Tools and Build
Affects Versions: 1.10.0
Reporter: Andy LoPresto
The EC toolkit cannot handle large flow definition files (>100 MB uncompressed)
due to its use of {{String}} to hold the XML content internally through
frequent manipulations. As Strings are immutable in Java, this causes a lot of
heap usage and duplication. The read/write to the file system also operates on
the String directly rather than perform a streaming read/write.
We should change the internal representation of the file content (for all
files) to be a {{BufferedInputStream}} or other similar stream representation
rather than a String. We should test with very large files (1 GB) and clearly
provide instructions and warnings if the file size exceeds that.
The logic of value encryption/replacement will have to change to handle this
approach.
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