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https://issues.apache.org/jira/browse/NIFI-10109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17557126#comment-17557126
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ASF subversion and git services commented on NIFI-10109:
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Commit 5febd47c72db79a0dd063b662ed8f23c2d9530be in nifi's branch
refs/heads/main from David Handermann
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=5febd47c72 ]
NIFI-10109 Changed HashMap to LinkedHashMap in JsonTreeRowRecordReader (#6112)
- Added unit test to confirm preservation of field ordering
> Preserve Field Order in JsonTreeReader Map Records
> --------------------------------------------------
>
> Key: NIFI-10109
> URL: https://issues.apache.org/jira/browse/NIFI-10109
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Extensions
> Reporter: David Handermann
> Assignee: David Handermann
> Priority: Minor
> Time Spent: 40m
> Remaining Estimate: 0h
>
> The current implementation of the {{JsonTreeReader}} reads JSON Object nodes
> into a {{HashMap}} for representation as a {{{}MapRecord{}}}. Schemas
> generated from JSON Objects retain field order, but the internal {{Map}}
> representation does not preserve the field order due to the non-deterministic
> use of {{{}HashMap{}}}. Changing the internal representation to a
> {{LinkedHashMap}} would preserve field order for methods such as
> {{{}Record.toMap(){}}}.
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