zhengruifeng commented on a change in pull request #30009:
URL: https://github.com/apache/spark/pull/30009#discussion_r503191442
##########
File path: mllib/src/main/scala/org/apache/spark/ml/feature/Instance.scala
##########
@@ -100,6 +102,23 @@ private[spark] case class InstanceBlock(
private[spark] object InstanceBlock {
+ private def getBlockSize(
+ numCols: Long,
+ numRows: Long,
+ nnz: Long,
+ allUnitWeight: Boolean): Long = {
+ val doubleBytes = java.lang.Double.BYTES
+ val arrayHeader = 12L
+ val denseSize = Matrices.getDenseSize(numCols, numRows)
+ val sparseSize = Matrices.getSparseSize(nnz, numRows + 1)
+ val matrixSize = math.min(denseSize, sparseSize)
+ if (allUnitWeight) {
+ matrixSize + doubleBytes * numRows + arrayHeader * 2
Review comment:
there is still two arrays, the weight array is `Array.emptyDoubleArray`,
so there is two arrayHeader?
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
