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https://issues.apache.org/jira/browse/NIFI-15255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18058632#comment-18058632
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ASF subversion and git services commented on NIFI-15255:
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Commit 1ae00bbadb3e7beea28b95d48565774088b342ba in nifi's branch
refs/heads/NIFI-15258 from Kevin Doran
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=1ae00bbadb ]
NIFI-15355 Connector Configuration Repository (#10876)
* NIFI-15255 Introduce ConnectorConfigurationRepository Extension Interface
* Add new property key to default nifi.properties file
* Address peer review comments
> Docker image still uses legacy start.sh/common.sh with broken
> prop_add_or_replace (related to #NIFI-14575)
> ----------------------------------------------------------------------------------------------------------
>
> Key: NIFI-15255
> URL: https://issues.apache.org/jira/browse/NIFI-15255
> Project: Apache NiFi
> Issue Type: Bug
> Components: Docker
> Affects Versions: 2.6.0
> Reporter: Fatih Mehmet ARSLAN
> Priority: Major
>
> *Summary*
> The NiFi Docker image still includes an old {{prop_add_or_replace}} function
> in {{{}start.sh/common.sh{}}}, which uses {{awk}} without specifying a file.
> This causes duplicate properties in {{nifi.properties}} and sometimes a
> startup hang.
> This does *not* occur in the upstream NiFi codebase (which no longer uses
> these scripts), but it still affects the official Docker image.
> *Problem*
> Inside the Docker image:
>
> {{property_found=$(awk -v property="${1}" 'index($0, property) == 1')}} *
> {{awk}} reads from stdin instead of a real file
> * Existing properties are never detected → always appended
> * Results in duplicate keys like:
>
> {{nifi.env.s3-bucket=...nifi.env.s3-bucket=...}}
> NiFi 2.6.0 fails to start with:
>
> {{Duplicate property keys with different values were detected}}
> If the property does not exist, {{awk}} also waits for input → script can
> hang.
> *Steps to Reproduce*
> # Run NiFi via {{{}apache/nifi:2.6.0{}}}.
> # Add any dynamic property in start.sh, e.g.:
>
> {{prop_add_or_replace 'nifi.env.test' 'value'}}
> # Restart container multiple times.
> # Check {{{}nifi.properties{}}}.
> *Expected*
> * Detect the property if it exists.
> * Replace instead of append.
> * No duplicate keys.
> *Actual*
> * Key is always appended.
> * Startup eventually fails.
> *Suggested Fix*
> Use a file-aware check:
>
> {{if grep -q -E "^${1}=" "${target_file}"; then prop_replace "$1" "$2"
> "${target_file}"elseecho "$1=$2" >> "${target_file}"fi}}
> (or update Docker image to match new Java-based bootstrap logic).
> ----
> If helpful, I can provide a PR or test a patched Docker image.
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