Fred Sko created NIFI-4629:
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Summary: Non-existing attribute in ControlRate configuration
causes NullPointerException
Key: NIFI-4629
URL: https://issues.apache.org/jira/browse/NIFI-4629
Project: Apache NiFi
Issue Type: Bug
Components: Configuration
Affects Versions: 1.4.0
Environment: Ubuntu LTS 16.04
openjdk-8-jre
Reporter: Fred Sko
Priority: Critical
Attachments: ControlRate-NP.xml
When using the ControlRate processor, defining the "Grouping Attribute" with a
missing/non-existing attribute name produces NullPointerException errors.
Processor configuration:
{quote}
Rate Control Criteria: flowfile count
Maximum rate: 10
Rate Controlled Attributes: (No value set)
Time Duration: 1 min
Grouping Attribute: foobar
{quote}
ControlRate with the following configuration when sent a flowfile without the
attributes {{foobar}} generates the following error:
bq. ControlRate\[id=dff05b32-015f-1000-db55-5957a9298bab]
ControlRate\[id=dff05b32-015f-1000-db55-5957a9298bab] failed to process due to
java.lang.NullPointerException; rolling back session: null
Additionally, the incoming flowfiles now ends up in some "dead" state where I'm
unable to even empty the queue.
A simple template for reproduction is attached.
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