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https://issues.apache.org/jira/browse/SPARK-21450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hossein Falaki updated SPARK-21450:
-----------------------------------
Description:
Consider the following two cases copied from {{test_sparkSQL.R}}:
{code}
df <- as.DataFrame(list(list("col" = "{\"date\":\"21/10/2014\"}")))
schema <- structType(structField("date", "date"))
s1 <- collect(select(df, from_json(df$col, schema)))
s2 <- collect(select(df, from_json(df$col, schema, dateFormat = "dd/MM/yyyy")))
{code}
If you inspect s1 using {{str(s1)}} you will find:
{code}
'data.frame': 2 obs. of 1 variable:
$ jsontostructs(col):List of 2
..$ : logi NA
{code}
But for s2, running {{str(s2)}} results in:
{code}
'data.frame': 2 obs. of 1 variable:
$ jsontostructs(col):List of 2
..$ :List of 1
.. ..$ date: Date, format: "2014-10-21"
.. ..- attr(*, "class")= chr "struct"
{code}
I assume this is not intentional and is just a subtle bug. Do you think
otherwise? [~shivaram] and [~felixcheung]
was:
Consider the following two cases copied from {{test_sparkSQL.R}}:
{code}
df <- as.DataFrame(list(list("col" = "{\"date\":\"21/10/2014\"}")))
schema <- structType(structField("date", "date"))
s1 <- collect(select(df, from_json(df$col, schema)))
s2 <- collect(select(df, from_json(df$col, schema2, dateFormat = "dd/MM/yyyy")))
{code}
If you inspect s1 using {{str(s1)}} you will find:
{code}
'data.frame': 2 obs. of 1 variable:
$ jsontostructs(col):List of 2
..$ : logi NA
{code}
But for s2, running {{str(s2)}} results in:
{code}
'data.frame': 2 obs. of 1 variable:
$ jsontostructs(col):List of 2
..$ :List of 1
.. ..$ date: Date, format: "2014-10-21"
.. ..- attr(*, "class")= chr "struct"
{code}
I assume this is not intentional and is just a subtle bug. Do you think
otherwise? [~shivaram] and [~felixcheung]
> List of NA is flattened inside a SparkR struct type
> ---------------------------------------------------
>
> Key: SPARK-21450
> URL: https://issues.apache.org/jira/browse/SPARK-21450
> Project: Spark
> Issue Type: Bug
> Components: SparkR
> Affects Versions: 2.2.0
> Reporter: Hossein Falaki
>
> Consider the following two cases copied from {{test_sparkSQL.R}}:
> {code}
> df <- as.DataFrame(list(list("col" = "{\"date\":\"21/10/2014\"}")))
> schema <- structType(structField("date", "date"))
> s1 <- collect(select(df, from_json(df$col, schema)))
> s2 <- collect(select(df, from_json(df$col, schema, dateFormat =
> "dd/MM/yyyy")))
> {code}
> If you inspect s1 using {{str(s1)}} you will find:
> {code}
> 'data.frame': 2 obs. of 1 variable:
> $ jsontostructs(col):List of 2
> ..$ : logi NA
> {code}
> But for s2, running {{str(s2)}} results in:
> {code}
> 'data.frame': 2 obs. of 1 variable:
> $ jsontostructs(col):List of 2
> ..$ :List of 1
> .. ..$ date: Date, format: "2014-10-21"
> .. ..- attr(*, "class")= chr "struct"
> {code}
> I assume this is not intentional and is just a subtle bug. Do you think
> otherwise? [~shivaram] and [~felixcheung]
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