jason created NIFI-14575:
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Summary: awk in prop_add_or_replace in common.sh missing target
file, causes script to hang
Key: NIFI-14575
URL: https://issues.apache.org/jira/browse/NIFI-14575
Project: Apache NiFi
Issue Type: Bug
Components: Configuration
Reporter: jason
In NiFi's {{{}start.sh{}}}, the {{prop_add_or_replace}} function uses {{awk}}
to check if a property exists, but does not specify a target file. When the
property is not found, {{awk}} waits for stdin, causing the script to hang.
*Steps to Reproduce：*
1. Pick a property key that does *not exist* in your {{nifi.bootstrap.conf}}
file, such as:
export CUSTOM_JAVA_OPT="-Dcustom.option.enabled=true"
2. Add the following line to the end of start.sh or run it manually for testing:
prop_add_or_replace 'java.arg.20' "${CUSTOM_JAVA_OPT}" ${nifi_bootstrap_file}
3. Execute {{{}start.sh{}}}.
4. The script will hang at this line because {{awk}} in {{prop_add_or_replace}}
does not specify a target file, and the property {{java.arg.20}} does not exist
yet.
h3. *Suggested Fix:*
Update the {{awk}} command to include the {{{}$target_file{}}}, like so:
property_found=$(awk -v property="${1}" 'index($0, property) == 1'
"$target_file")
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