Ala Luszczak created SPARK-22092:
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Summary: Reallocation in OffHeapColumnVector.reserveInternal
corrupts array data
Key: SPARK-22092
URL: https://issues.apache.org/jira/browse/SPARK-22092
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.2.0
Reporter: Ala Luszczak
OffHeapColumnVector.reserveInternal() will only copy already inserted values
during reallocation if this.data != null. However, for vectors containing
arrays, field data is disused and always equals null. Hence, the reallocation
of array vector always causes data loss.
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