[jira] [Updated] (ARROW-12162) [R] read_parquet returns Invalid UTF8 payload

["David Wales (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-12162?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Wales updated ARROW-12162:
--------------------------------
    Description: 
h2. Background

I am using the R arrow library.

I am reading from an SQL Server database with the `latin1` encoding using `dbplyr` and saving the output as a parquet file: 
{code:java}
# Assume `con` is a previously established connection to the database created with DBI::dbConnect
tbl(con, in_schema("dbo", "latin1_table")) %>%

  collect() %>%

  write_parquet("output.parquet")
{code}
 

However, when I try to read the file back, I get the error "Invalid UTF8 payload": 
{code:java}
> read_parquet("output.parquet")

Error: Invalid: Invalid UTF8 payload
{code}
h2. Minimal Reproducible Example

I have isolated this issue to a minimal reproducible example.

If the database table contains the latin1 single quote character, then it will trigger the error.

I have attached a `.rds` file which contains an example tibble.

To reproduce, run the following: 
{code:java}
readRDS(file.path(data_dir, "bad_char.rds")) %>% write_parquet(file.path(data_dir, "bad_char.parquet"))

read_parquet(file.path(data_dir, "bad_char.parquet"))
{code}

  was:
h2. Background

I am using the R arrow library.

I am reading from an SQL Server database with the `latin1` encoding using `dbplyr` and saving the output as a parquet file:

 
{code:java}
# Assume `con` is a previously established connection to the database created with DBI::dbConnect
tbl(con, in_schema("dbo", "latin1_table")) %>%

  collect() %>%

  write_parquet("output.parquet")
{code}
 

However, when I try to read the file back, I get the error "Invalid UTF8 payload":

 
{code:java}
> read_parquet("output.parquet")

Error: Invalid: Invalid UTF8 payload
{code}
h2. Minimal Reproducible Example

I have isolated this issue to a minimal reproducible example.

If the database table contains the latin1 single quote character, then it will trigger the error.

I have attached a `.rds` file which contains an example tibble.

To reproduce, run the following:

 
{code:java}
readRDS(file.path(data_dir, "bad_char.rds")) %>% write_parquet(file.path(data_dir, "bad_char.parquet"))

read_parquet(file.path(data_dir, "bad_char.parquet"))
{code}


> [R] read_parquet returns Invalid UTF8 payload
> ---------------------------------------------
>
>                 Key: ARROW-12162
>                 URL: https://issues.apache.org/jira/browse/ARROW-12162
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: R
>    Affects Versions: 3.0.0
>         Environment: Windows 10
> R 4.0.3
> arrow 3.0.0
> dbplyr 2.0.0
> dplyr 1.0.2
>            Reporter: David Wales
>            Priority: Major
>         Attachments: bad_char.rds
>
>
> h2. Background
> I am using the R arrow library.
> I am reading from an SQL Server database with the `latin1` encoding using `dbplyr` and saving the output as a parquet file: 
> {code:java}
> # Assume `con` is a previously established connection to the database created with DBI::dbConnect
> tbl(con, in_schema("dbo", "latin1_table")) %>%
>   collect() %>%
>   write_parquet("output.parquet")
> {code}
>  
> However, when I try to read the file back, I get the error "Invalid UTF8 payload": 
> {code:java}
> > read_parquet("output.parquet")
> Error: Invalid: Invalid UTF8 payload
> {code}
> h2. Minimal Reproducible Example
> I have isolated this issue to a minimal reproducible example.
> If the database table contains the latin1 single quote character, then it will trigger the error.
> I have attached a `.rds` file which contains an example tibble.
> To reproduce, run the following: 
> {code:java}
> readRDS(file.path(data_dir, "bad_char.rds")) %>% write_parquet(file.path(data_dir, "bad_char.parquet"))
> read_parquet(file.path(data_dir, "bad_char.parquet"))
> {code}



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