[ErrorProne] Enable LongDoubleConversion check

[stankiewicz]

This PR removes the LongDoubleConversion check from the disabled check list in ErrorProne configuration (BeamModulePlugin.groovy) and resolves the warnings it uncovered across the codebase. `

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[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances code quality by activating the LongDoubleConversion ErrorProne check. This check identifies potential precision loss when converting long to double. The changes involve removing the check from the disabled list and applying explicit type casting in several locations to prevent implicit conversions and ensure correct numerical operations across the codebase.

Highlights

• ErrorProne Check Enabled: The LongDoubleConversion ErrorProne check has been enabled by removing it from the disabled checks list in the Gradle configuration.
• Type Casting for Precision: Explicit (double) casts were added in several Java files to resolve warnings identified by the LongDoubleConversion check, preventing potential precision loss during long to double conversions.

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Changelog

• buildSrc/src/main/groovy/org/apache/beam/gradle/BeamModulePlugin.groovy
  • Removed LongDoubleConversion from the list of disabled ErrorProne checks.
• sdks/java/core/src/main/java/org/apache/beam/sdk/io/Read.java
  • Added explicit (double) cast to estimatedSize before Math.sqrt.
  • Added explicit (double) cast to size when creating a Progress object.
• sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/ApproximateQuantiles.java
  • Added explicit (double) cast to maxNumElements in the withMaxInputSize method.
  • Added explicit (double) casts to newWeight and offset(newWeight) in the collapse method.
• sdks/java/core/src/main/java/org/apache/beam/sdk/util/FluentBackoff.java
  • Added explicit (double) cast to backoffConfig.maxBackoff.getMillis() in the nextBackOffMillis calculation.
• sdks/java/core/src/test/java/org/apache/beam/sdk/transforms/splittabledofn/GrowableOffsetRangeTrackerTest.java
  • Updated assertEquals assertions with explicit (double) casts for getWorkCompleted and getWorkRemaining values to match expected double types.

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[stankiewicz]

Run Java PreCommit

[stankiewicz]

/gemini review

[gemini-code-assist]

Code Review

This pull request enables the LongDoubleConversion check in ErrorProne and applies the necessary fixes across the codebase. The changes consistently add explicit (double) casts where long values were being implicitly converted to double, which is the correct way to resolve these warnings. This improves code clarity and makes developers aware of potential precision loss. All the modifications look correct and I have no further suggestions.