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https://issues.apache.org/jira/browse/CARBONDATA-1509?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ravindra Pesala resolved CARBONDATA-1509.
-----------------------------------------
Resolution: Fixed
> Fixed bug for maintaining compatibility of decimal type with older releases
> of Carbondata
> -----------------------------------------------------------------------------------------
>
> Key: CARBONDATA-1509
> URL: https://issues.apache.org/jira/browse/CARBONDATA-1509
> Project: CarbonData
> Issue Type: Bug
> Reporter: Manish Gupta
> Assignee: Manish Gupta
> Fix For: 1.2.0
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> In old Carbondata releases, precision and scale is not stored for decimal
> data type and both values are initialized to -1. In TableSpec.ColumnSpec
> default values for precision and scale are initialized to 0 because of which
> exception is thrown while reading the old store with decimal column.
> Exception trace
> Caused by: java.lang.ClassCastException: [B cannot be cast to java.lang.Long
> at
> org.apache.carbondata.core.metadata.datatype.DecimalConverterFactory$DecimalIntConverter.getDecimal(DecimalConverterFactory.java:98)
> at
> org.apache.carbondata.core.datastore.page.UnsafeDecimalColumnPage.getDecimal(UnsafeDecimalColumnPage.java:260)
> at
> org.apache.carbondata.core.datastore.page.LazyColumnPage.getDecimal(LazyColumnPage.java:111)
> at
> org.apache.carbondata.core.scan.result.vector.MeasureDataVectorProcessor$DecimalMeasureVectorFiller.fillMeasureVector(MeasureDataVectorProcessor.java:215)
> at
> org.apache.carbondata.core.scan.result.AbstractScannedResult.fillColumnarMeasureBatch(AbstractScannedResult.java:257)
> at
> org.apache.carbondata.core.scan.collector.impl.DictionaryBasedVectorResultCollector.scanAndFillResult(DictionaryBasedVectorResultCollector.java:164)
> at
> org.apache.carbondata.core.scan.collector.impl.DictionaryBasedVectorResultCollector.collectVectorBatch(DictionaryBasedVectorResultCollector.java:155)
> at
> org.apache.carbondata.core.scan.processor.impl.DataBlockIteratorImpl.processNextBatch(DataBlockIteratorImpl.java:65)
> at
> org.apache.carbondata.core.scan.result.iterator.VectorDetailQueryResultIterator.processNextBatch(VectorDetailQueryResultIterator.java:46)
> at
> org.apache.carbondata.spark.vectorreader.VectorizedCarbonRecordReader.nextBatch(VectorizedCarbonRecordReader.java:258)
> at
> org.apache.carbondata.spark.vectorreader.VectorizedCarbonRecordReader.nextKeyValue(VectorizedCarbonRecordReader.java:145)
> at
> org.apache.carbondata.spark.rdd.CarbonScanRDD$$anon$1.hasNext(CarbonScanRDD.scala:246)
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