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https://issues.apache.org/jira/browse/HIVE-17984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Syam updated HIVE-17984:
------------------------
Summary: getMaxLength is not returning the correct lengths for Char/Varchar
types while reading the ORC file from WebHDFS file system (was: getMaxLength
is not returning the previously set length in ORC file)
> getMaxLength is not returning the correct lengths for Char/Varchar types
> while reading the ORC file from WebHDFS file system
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-17984
> URL: https://issues.apache.org/jira/browse/HIVE-17984
> Project: Hive
> Issue Type: Bug
> Components: Hive, ORC
> Environment: tested it against hive-exec 2.1
> Reporter: Syam
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> getMaxLength is not returning the correct length for char/varchar datatypes.
> I see that getMaxLength is returning 255 for CHAR type and 65535 for VARCHAR
> type.
> When I checked the same file using orcfiledump utility, I could see the
> correct lengths.
> Here is the snippet of the code:
> Reader _reader = OrcFile.createReader(new
> Path(_fileName),OrcFile.readerOptions(conf).filesystem(fs)) ;
> TypeDescription metarec = _reader.getSchema() ;
> List <TypeDescription> cols = metarec.getChildren();
> List <String> colNames = metarec.getFieldNames();
> for (int i=0; i < cols.size(); i++)
> {
> TypeDescription fieldSchema = cols.get(i);
> switch (fieldSchema.getCategory())
> {
> case CHAR:
> header += "char(" + fieldSchema.getMaxLength() + ")" ;
> break;
> ----------
> ----------
> }
> }
> Please let me know your pointers please.
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