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Update doc to note that single quoted json strings are not ok #2316

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merged 5 commits into from
May 1, 2021
Merged

Update doc to note that single quoted json strings are not ok #2316

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413b0f9
Update doc to note that single quoted json strings are not ok
sameerz Apr 30, 2021
f56b4b9
Correct capitalization of PySpark
sameerz Apr 30, 2021
b908105
operator -> operation
sameerz Apr 30, 2021
5bdc656
Mention the behavior will be updated in the future.
sameerz Apr 30, 2021
a3ef729
Note that the double quote requirement is for strings in JSON data
sameerz Apr 30, 2021
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7 changes: 7 additions & 0 deletions docs/compatibility.md
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Expand Up @@ -450,3 +450,10 @@ ConstantFolding is an operator optimization rule in Catalyst that replaces expre
be statically evaluated with their equivalent literal values. The RAPIDS Accelerator relies
on constant folding and parts of the query will not be accelerated if
`org.apache.spark.sql.catalyst.optimizer.ConstantFolding` is excluded as a rule.

## JSON string handling
The 0.5 release introduces the `get_json_object` operation. The JSON specification only allows
double quotes around strings in JSON data, whereas Spark allows single quotes around strings in JSON
data. The RAPIDS Spark `get_json_object` operation on the GPU will return `None` in PySpark or
`Null` in Scala when trying to match a string surrounded by single quotes. This behavior will be
updated in a future release to more closely match Spark.