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https://issues.apache.org/jira/browse/CARBONDATA-3565?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ChenKai updated CARBONDATA-3565:
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Description:
* issue
Spark DataFrame(SQL) load complex binary data to a hive table, the data will be
broken when reading out. I see in RddIterator, the data will be converted to a
string, and then be converted back.
* test case
Binary data can be *DataOutputStream#writeDouble* and so on.
* discussion
I think *CarbonScalaUtil#getString* operation can be removed now. I dig deep
into the code in 2016, the code was used in kettle *CsvInput* (commit:
0018756d). But the code has been removed now, I think this converting operation
is a little redundant. (UPDATE: The follow-up code GenericParser will use this
string-convert logic, should consider here.)
was:
* issue
Spark DataFrame(SQL) load complex binary data to a hive table, the data will be
broken when reading out. I see in RddIterator, the data will be converted to a
string, and then be converted back.
* test case
Binary data can be *DataOutputStream#writeDouble* and so on.
* discussion
I think *CarbonScalaUtil#getString* operation can be removed now. I dig deep
into the code in 2016, the code was used in kettle *CsvInput* (commit:
0018756d). But the code has been removed now, I think this converting operation
is a little redundant.
> Binary to string issue when loading dataframe data in NewRddIterator
> --------------------------------------------------------------------
>
> Key: CARBONDATA-3565
> URL: https://issues.apache.org/jira/browse/CARBONDATA-3565
> Project: CarbonData
> Issue Type: Bug
> Components: spark-integration
> Affects Versions: 1.6.0
> Reporter: ChenKai
> Priority: Major
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> * issue
> Spark DataFrame(SQL) load complex binary data to a hive table, the data will
> be broken when reading out. I see in RddIterator, the data will be converted
> to a string, and then be converted back.
> * test case
> Binary data can be *DataOutputStream#writeDouble* and so on.
> * discussion
> I think *CarbonScalaUtil#getString* operation can be removed now. I dig deep
> into the code in 2016, the code was used in kettle *CsvInput* (commit:
> 0018756d). But the code has been removed now, I think this converting
> operation is a little redundant. (UPDATE: The follow-up code GenericParser
> will use this string-convert logic, should consider here.)
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