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  1. Spark
  2. SPARK-24809

Serializing LongHashedRelation in executor may result in data error

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: 2.0.0, 2.1.0, 2.2.0, 2.3.0
    • Fix Version/s: 2.1.4, 2.2.3, 2.3.2, 2.4.0
    • Component/s: SQL
    • Labels:
    • Environment:

      Spark 2.2.1

      hadoop 2.7.1

      Description

      When join key is long or int in broadcast join, Spark will use LongHashedRelation as the broadcast value. Details see SPARK-14419. But, if the broadcast value is abnormal big, executor will serialize it to disk. But, data will lost when serializing.

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            • Assignee:
              liutang123 Lijia Liu
              Reporter:
              liutang123 Lijia Liu
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              • Created:
                Updated:
                Resolved: