Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/22967
At this time, this is MiMa issue.
```
[error] * method compressed()org.apache.spark.ml.linalg.Matrix in trait
org.apache.spark.ml.linalg.Matrix does not have a correspondent in current
version
[error] filter with:
ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.ml.linalg.Matrix.compressed")
[error] * method compressedRowMajor()org.apache.spark.ml.linalg.Matrix in
trait org.apache.spark.ml.linalg.Matrix does not have a correspondent in
current version
[error] filter with:
ProblemFilters.exclude[DirectMissingMethodProblem]("org.apache.spark.ml.linalg.Matrix.compressedRowMajor")
```
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