[
https://issues.apache.org/jira/browse/CARBONDATA-2982?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
xubo245 updated CARBONDATA-2982:
--------------------------------
Description:
CarbonSchemaReader don't support Array<string>
When we read schema from index file and the data include array<string> data type
run org.apache.carbondata.examples.sdk.CarbonReaderExample :
{code:java}
Schema schema = CarbonSchemaReader
.readSchemaInIndexFile(dataFiles[0].getAbsolutePath())
.asOriginOrder();
// Transform the schema
String[] strings = new String[schema.getFields().length];
for (int i = 0; i < schema.getFields().length; i++) {
strings[i] = (schema.getFields())[i].getFieldName();
System.out.println(strings[i] + "\t" +
schema.getFields()[i].getSchemaOrdinal());
}
{code}
and throw some exception:
{code:java}
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more
info.
arrayfield.val0 -1
stringfield 0
shortfield 1
intfield 2
longfield 3
doublefield 4
boolfield 5
datefield 6
timefield 7
decimalfield 8
varcharfield 9
arrayfield 10
Complex child columns projection NOT supported through CarbonReader
java.lang.UnsupportedOperationException: Complex child columns projection NOT
supported through CarbonReader
at
org.apache.carbondata.sdk.file.CarbonReaderBuilder.build(CarbonReaderBuilder.java:155)
at
org.apache.carbondata.examples.sdk.CarbonReaderExample.main(CarbonReaderExample.java:110)
{code}
It print arrayfield.val0 -1, child schema
was:
CarbonSchemaReader don't support Array<string>
When we read schema from index file and the data include array<string> data type
run org.apache.carbondata.examples.sdk.CarbonReaderExample :
{code:java}
Schema schema = CarbonSchemaReader
.readSchemaInIndexFile(dataFiles[0].getAbsolutePath())
.asOriginOrder();
// Transform the schema
String[] strings = new String[schema.getFields().length];
for (int i = 0; i < schema.getFields().length; i++) {
strings[i] = (schema.getFields())[i].getFieldName();
System.out.println(strings[i] + "\t" +
schema.getFields()[i].getSchemaOrdinal());
}
{code}
and throw some exception:
{code:java}
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more
info.
arrayfield.val0 -1
stringfield 0
shortfield 1
intfield 2
longfield 3
doublefield 4
boolfield 5
datefield 6
timefield 7
decimalfield 8
varcharfield 9
arrayfield 10
Complex child columns projection NOT supported through CarbonReader
java.lang.UnsupportedOperationException: Complex child columns projection NOT
supported through CarbonReader
at
org.apache.carbondata.sdk.file.CarbonReaderBuilder.build(CarbonReaderBuilder.java:155)
at
org.apache.carbondata.examples.sdk.CarbonReaderExample.main(CarbonReaderExample.java:110)
{code}
> CarbonSchemaReader don't support Array<string>
> ----------------------------------------------
>
> Key: CARBONDATA-2982
> URL: https://issues.apache.org/jira/browse/CARBONDATA-2982
> Project: CarbonData
> Issue Type: Bug
> Components: other
> Affects Versions: 1.5.0
> Reporter: xubo245
> Assignee: xubo245
> Priority: Major
> Fix For: 1.5.0
>
>
> CarbonSchemaReader don't support Array<string>
> When we read schema from index file and the data include array<string> data
> type
> run org.apache.carbondata.examples.sdk.CarbonReaderExample :
> {code:java}
> Schema schema = CarbonSchemaReader
> .readSchemaInIndexFile(dataFiles[0].getAbsolutePath())
> .asOriginOrder();
> // Transform the schema
> String[] strings = new String[schema.getFields().length];
> for (int i = 0; i < schema.getFields().length; i++) {
> strings[i] = (schema.getFields())[i].getFieldName();
> System.out.println(strings[i] + "\t" +
> schema.getFields()[i].getSchemaOrdinal());
> }
> {code}
> and throw some exception:
> {code:java}
> log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more
> info.
> arrayfield.val0 -1
> stringfield 0
> shortfield 1
> intfield 2
> longfield 3
> doublefield 4
> boolfield 5
> datefield 6
> timefield 7
> decimalfield 8
> varcharfield 9
> arrayfield 10
> Complex child columns projection NOT supported through CarbonReader
> java.lang.UnsupportedOperationException: Complex child columns projection NOT
> supported through CarbonReader
> at
> org.apache.carbondata.sdk.file.CarbonReaderBuilder.build(CarbonReaderBuilder.java:155)
> at
> org.apache.carbondata.examples.sdk.CarbonReaderExample.main(CarbonReaderExample.java:110)
> {code}
> It print arrayfield.val0 -1, child schema
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