[fix][io] Make record properties configurable for kinesis source

[shibd]

Motivation

The Kinesis source connector's handling of metadata properties was rigid and contained a critical bug.

• Properties were not configurable: Users could not select which Kinesis metadata properties to include in Pulsar messages. This forced all properties to be included, which could be inefficient in terms of message size.

• Key Collision Bug: A bug was discovered where all property keys were defined as an empty string (""), causing a key collision that resulted in the loss of all metadata except for the last one set (sequenceNumber).

This PR fixes these issues by introducing a configuration to control which properties are included, which also resolves the underlying bug.

Modifications

• Added a new configuration, kinesisRecordProperties, to KinesisSourceConfig.java. This allows users to provide a comma-separated list of properties to include.
• The default value retains all previously available properties to ensure backward compatibility.
• As part of making the properties configurable, the empty string constants in KinesisRecord.java were replaced with unique, descriptive keys (e.g., "kinesis.arrival.timestamp"), fixing the data loss bug.

Verifying this change

• Add unit test to covert this change

Does this pull request potentially affect one of the following parts:

If the box was checked, please highlight the changes

• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The threading model
• The binary protocol
• The REST endpoints
• The admin CLI options
• The metrics
• Anything that affects deployment

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository:

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 76.92308% with 6 lines in your changes missing coverage. Please review.

Project coverage is 74.28%. Comparing base (bbc6224) to head (42fc078).
Report is 1187 commits behind head on master.

Files with missing lines	Patch %	Lines
...ache/pulsar/io/kinesis/KinesisRecordProcessor.java	0.00%	5 Missing ⚠️
.../apache/pulsar/io/kinesis/KinesisSourceConfig.java	87.50%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #24495      +/-   ##
============================================
+ Coverage     73.57%   74.28%   +0.71%     
- Complexity    32624    32843     +219     
============================================
  Files          1877     1868       -9     
  Lines        139502   145902    +6400     
  Branches      15299    16728    +1429     
============================================
+ Hits         102638   108390    +5752     
- Misses        28908    28914       +6     
- Partials       7956     8598     +642     

Flag	Coverage Δ
inttests	26.71% <ø> (+2.13%)	⬆️
systests	23.33% <0.00%> (-0.99%)	⬇️
unittests	73.77% <76.92%> (+0.92%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...va/org/apache/pulsar/io/kinesis/KinesisRecord.java	73.52% <100.00%> (+73.52%)	⬆️
.../apache/pulsar/io/kinesis/KinesisSourceConfig.java	27.50% <87.50%> (-9.76%)	⬇️
...ache/pulsar/io/kinesis/KinesisRecordProcessor.java	0.00% <0.00%> (ø)

... and 1091 files with indirect coverage changes

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[RobertIndie]

LGTM

[Copilot]

Pull Request Overview

This PR makes Kinesis metadata properties configurable and fixes a key-collision bug by giving each property a unique key. It updates the source configuration, record processor, and record class to honor a user-defined list of properties, and adds unit tests for the new behavior.

• Introduce kinesisRecordProperties config to select which metadata properties to include
• Replace empty-string constants in KinesisRecord with descriptive keys and conditionally set them
• Update processor and config loading logic, and add tests for default, custom, and empty property lists

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
KinesisSourceConfig.java	Add kinesisRecordProperties field, parse it into a propertiesToInclude set
KinesisRecordProcessor.java	Store and pass propertiesToInclude into each KinesisRecord; update logging
KinesisRecord.java	Replace empty constants with descriptive keys; conditionally populate properties
KinesisSourceConfigTests.java	Add tests for default, custom, and empty property configurations
KinesisRecordTest.java	Add tests covering all/some/none property inclusion scenarios

Comments suppressed due to low confidence (1)

pulsar-io/kinesis/src/test/java/org/apache/pulsar/io/kinesis/KinesisSourceConfigTests.java:176

• The default properties test only verifies the total count and two keys; consider asserting all six default properties are present to ensure full coverage.

        assertEquals(properties.size(), 6);