Sean Owen created SPARK-25984:
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Summary: Remove deprecated .newInstance(), primitive box class
constructor calls
Key: SPARK-25984
URL: https://issues.apache.org/jira/browse/SPARK-25984
Project: Spark
Issue Type: Sub-task
Components: Spark Core, SQL, Structured Streaming
Affects Versions: 3.0.0
Reporter: Sean Owen
Assignee: Sean Owen
While working on JDK 11 support, I noticed a lot of new deprecation warnings.
80% of them seem to be from two easily-fixable sources:
- Class.newInstance() is deprecated
- Almost all constructors from primitive box classes like Integer are deprecated
These are easy to fix because there have long been equivalent, better
alternatives:
- Just call .getConstructor().getInstance()
- Replace new Integer(x) with Integer.valueOf(x), etc
The latter has the advantage, for integral types, of not even allocating a new
object for small values.
We should just fix these to clean up the build output.
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