[jira] [Created] (SPARK-8309) OpenHashMap doesn't work with more than 12M items

["Vyacheslav Baranov (JIRA)" <ji...@apache.org>]

Vyacheslav Baranov created SPARK-8309:
-----------------------------------------

             Summary: OpenHashMap doesn't work with more than 12M items
                 Key: SPARK-8309
                 URL: https://issues.apache.org/jira/browse/SPARK-8309
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 1.4.0
            Reporter: Vyacheslav Baranov


The problem might be demonstrated with the following testcase:

{code:scala}
  test("support for more than 12M items") {
    val cnt = 12000000 // 12M
    val map = new OpenHashMap[Int, Int](cnt)
    for (i <- 0 until cnt) {
      map(i) = 1
    }
    val numInvalidValues = map.iterator.count(_._2 == 0)
    assertResult(0)(numInvalidValues)
  }

{code}



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