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Posted to issues@spark.apache.org by "Dong Wang (Jira)" <ji...@apache.org> on 2020/01/17 08:52:00 UTC

[jira] [Created] (SPARK-30548) Cached blockInfo in BlockMatrix.scala is never released

Dong Wang created SPARK-30548:
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             Summary: Cached blockInfo in BlockMatrix.scala is never released
                 Key: SPARK-30548
                 URL: https://issues.apache.org/jira/browse/SPARK-30548
             Project: Spark
          Issue Type: Improvement
          Components: MLlib
    Affects Versions: 2.4.4
            Reporter: Dong Wang


The private variable _blockInfo_ in mllib.linalg.distribtued.BlockMatrix is never unpersisted since a BlockMatrix instance is created.

{code:scala}
 private lazy val blockInfo = blocks.mapValues(block => (block.numRows, block.numCols)).cache()
{code}

I think we should add an API to unpersist this variable.



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