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Fix handling an empty list of versions#16198

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abhishekrb19 merged 3 commits intoapache:masterfrom
abhishekrb19:fix_null_empty_checks
Mar 26, 2024
Merged

Fix handling an empty list of versions#16198
abhishekrb19 merged 3 commits intoapache:masterfrom
abhishekrb19:fix_null_empty_checks

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@abhishekrb19 abhishekrb19 commented Mar 25, 2024

This patch addresses this review comment by treating null and an empty list of versions differently. An empty collection passed should return no results, rather than ignoring it and returning all results.

Changes

  • Update the condition to handle the null and empty versions differently
  • Clarify javadocs on the behavior of empty versions
  • Add tests for the empty versions in different classes, which would fail without this patch

This PR has:

  • been self-reviewed.
  • added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
  • added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
  • been tested in a test Druid cluster.

@abhishekrb19
Differentiate null and empty lists of segment IDs and versions.
cbf9849 
Treat them differently so the. Segment IDs and versions can be An empty list,
in which case, the queries should just not return anything. Versions are optional, so
they can be null, which just indicates nothing, so the queries should return segments with
all possible versions. Segment IDs cannot be null as indicated by the absence of @nullable
annotation.
@abhishekrb19
Update javadocs and add empty versions test to kill task.
ff69ede
@abhishekrb19 abhishekrb19 requested a review from kfaraz March 25, 2024 16:35
kfaraz
kfaraz approved these changes Mar 25, 2024
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Thanks for addressing this!

Comment thread server/src/main/java/org/apache/druid/metadata/SqlSegmentsMetadataQuery.java
@abhishekrb19 abhishekrb19 merged commit 95595ba into apache:master Mar 26, 2024
@abhishekrb19 abhishekrb19 deleted the fix_null_empty_checks branch March 26, 2024 00:51
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abhishekrb19 commented Mar 26, 2024

Thanks for the quick review, @kfaraz!

@adarshsanjeev adarshsanjeev added this to the 30.0.0 milestone May 6, 2024
@adarshsanjeev adarshsanjeev mentioned this pull request May 28, 2024
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