David Handermann created NIFI-8120:
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Summary: Improve HandleHttpResponse processing of Runtime
Exceptions
Key: NIFI-8120
URL: https://issues.apache.org/jira/browse/NIFI-8120
Project: Apache NiFi
Issue Type: Improvement
Components: Extensions
Affects Versions: 1.12.1, 1.2.0
Reporter: David Handermann
Assignee: David Handermann
When catching a {{ProcessException}} while trying to export Flow File contents
to an HTTP output stream, the {{HandleHttpResponse}} Processor will attempt to
call {{HttpContextMap.complete()}} in order to finish processing the HTTP
transaction. If the HTTP Context Identifier is no longer present in the
{{HttpContextMap}} or if the HTTP client associated with the transaction has
already terminated the connection, {{HttpContextMap.complete()}} will throw an
{{IllegalStateException}} or some other type of {{RuntimeException}}. When
this occurs, {{HandleHttpResponse}} falls back to administratively yielding and
does not route the Flow File to the failure relationship. The end result is
that Flow Files associated with closed HTTP connections remain queued.
The other call to {{HttpContextMap.complete()}} already handles an
{{IllegalStateException}} so both calls should be handled in the same way to
avoid leaving files in the queue.
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