Dan Bress created NIFI-769:
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Summary: ByteCountingInputStream does not count properly if you
reset() twice in a row
Key: NIFI-769
URL: https://issues.apache.org/jira/browse/NIFI-769
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Affects Versions: 0.1.0
Reporter: Dan Bress
Priority: Minor
[ByteCountingInputStream|https://github.com/apache/incubator-nifi/blob/develop/nifi/nifi-commons/nifi-utils/src/main/java/org/apache/nifi/stream/io/ByteCountingInputStream.java#L99-L103]
will deduct too many bytes if you call reset() twice in a row after having
called mark()
Example code here:
{code}
ByteCountingInputStream bis = new ByteCountingInputStream(inputStream);
bis.mark();
bis.read();
bis.read();
// getBytesRead() should be and is 2 at this point
bis.reset();
// getBytesRead() should be and is 0 at this point
bis.reset();
Assert.assertEquals(0, bis.getBytesRead()); // this fails, getBytesRead() is -2
{code}
Lets say you are using a very strange weird old API that someone else wrote and
you can't change in your processor to parse an InputStream and that strange
weird old API is calling mark and then reset twice for some unknown reason.
This will result in the bytes read count in the processor being wrong.
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