zhengruifeng opened a new pull request #27484: Revert "[SPARK-30660][ML][PYSPARK] LinearRegression blockify input ve… URL: https://github.com/apache/spark/pull/27484 ### What changes were proposed in this pull request? Revert [SPARK-30660][ML][PYSPARK] LinearRegression blockify input vectors ### Why are the changes needed? It need more performace tests, specially on sparse datasets ### Does this PR introduce any user-facing change? Yes, param blockSize in removed ### How was this patch tested? reverted testsuites
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