[SPARK-19395] Convert coefficients in summary to matrix - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 2.2.0
Component/s: SparkR
Labels:
None

Target Version/s:

2.2.0

Description

The coefficients component in model summary should be 'matrix' but the underlying structure is indeed list. This affects several models except for 'AFTSurvivalRegressionModel' which has the correct implementation. The fix is to first unlist the coefficients returned from the callJMethod before converting to matrix.