[SQOOP-2567] SQOOP import for Oracle fails with invalid precision/scale for decimal

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.5
• Fix Version/s: 1.5.0
• Component/s: connectors
• Labels: AVRO ORACLE

Environment

CDH5.3

• Assignee: Fero Szabo
• Reporter: Suresh Deoda
• Created: 12/Sep/15 07:44
• Updated: 18/Apr/18 09:17
• Resolved: 18/Apr/18 09:17

Description

Sqoop import fails creating avrodata file from the oracle source with decimal data. If the table in oracle is defined as say,
Col1 as Decimal(12,11) , but if some data has few less digits in scale then it fails with the error as,

Error: org.apache.avro.file.DataFileWriter$AppendWriteException: org.apache.avro.AvroTypeException: Cannot encode decimal with scale 10 as scale 11
at org.apache.avro.file.DataFileWriter.append(DataFileWriter.java:296)
at org.apache.sqoop.mapreduce.AvroOutputFormat$1.write(AvroOutputFormat.java:112)
at org.apache.sqoop.mapreduce.AvroOutputFormat$1.write(AvroOutputFormat.java:108)
at org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.write(MapTask.java:655)
at org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89)
at org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.write(WrappedMapper.java:112)
at org.apache.sqoop.mapreduce.AvroImportMapper.map(AvroImportMapper.java:73)
at org.apache.sqoop.mapreduce.AvroImportMapper.map(AvroImportMapper.java:39)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:145)
at org.apache.sqoop.mapreduce.AutoProgressMapper.run(AutoProgressMapper.java:64)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:784)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1642)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:163)
Caused by: org.apache.avro.AvroTypeException: Cannot encode decimal with scale 10 as scale 11
at org.apache.avro.Conversions$DecimalConversion.toBytes(Conversions.java:68)
at org.apache.avro.Conversions$DecimalConversion.toBytes(Conversions.java:39)
at org.apache.avro.generic.GenericDatumWriter.convert(GenericDatumWriter.java:90)
at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:70)
at org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:143)
at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:112)
at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73)
at org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:143)
at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:153)
at org.apache.avro.reflect.ReflectDatumWriter.writeField(ReflectDatumWriter.java:175)

also, when we dont have precision defined in Oracle ( which it takes default (38,0) i guess) it gives error as ,

ERROR tool.ImportTool: Imported Failed: Invalid decimal precision: 0 (must be positive)

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