Uroš Bojanić created SPARK-59172:
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Summary: Use isEmpty instead of size == 0 in core tests
Key: SPARK-59172
URL: https://issues.apache.org/jira/browse/SPARK-59172
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 4.4.0
Reporter: Uroš Bojanić
Several core test suites check collection emptiness with 'size == 0' instead of
the more direct 'isEmpty'. This replaces 11 such occurrences across 6 test
suites (MapOutputTrackerSuite, SparkTestSuite,
StandaloneDynamicAllocationSuite, TaskSetManagerSuite, BlockManagerSuite,
NextIteratorSuite) with 'isEmpty'. Behavior is unchanged. Note: two main-source
occurrences (BlockManager, ShuffleBlockFetcherIterator) are intentionally left
unchanged because there 'buf.size' is a ManagedBuffer byte count, not a
collection size (ManagedBuffer has no isEmpty). Counterpart of SPARK-59149 (SQL
modules); a separate PR covers MLlib.
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