Marco Gaido created SPARK-25123:
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Summary: SimpleExprValue may cause the loss of a reference
Key: SPARK-25123
URL: https://issues.apache.org/jira/browse/SPARK-25123
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.4.0
Reporter: Marco Gaido
While introducing the new JavaCode abstraction in order to enable tracking
references and allowing transformations, we added 3 types of expression values.
They are global variables, local variables and simple expressions.
While checking whether we could use this new abstraction for fixing an issue
reported in another JIRA, I just realized that SimpleExprValue contains a
string with the generated code, but this can actually contain other variables.
Since the value is carried in SimpleExprValue is a string, though, we were
loosing track of the variable reference.
So this JIRA is for using a Block in order to represent the java code carried
by SimpleExprValue, so that we don't loose references.
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