Xiangrui Meng created SPARK-15947:
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Summary: Make pipeline components backward compatible with old
vector columns in Scala/Java
Key: SPARK-15947
URL: https://issues.apache.org/jira/browse/SPARK-15947
Project: Spark
Issue Type: Sub-task
Components: ML, MLlib
Affects Versions: 2.0.0
Reporter: Xiangrui Meng
After SPARK-15945, we should make ALL pipeline components accept old vector
columns as input and do the conversion automatically (probably with a warning
message), in order to smooth the migration to 2.0.
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