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From "xuchuanyin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CARBONDATA-1267) Failure in data loading due to bugs in delta-integer-codec
Date Wed, 05 Jul 2017 12:55:00 GMT
xuchuanyin created CARBONDATA-1267:
--------------------------------------

             Summary: Failure in data loading due to bugs in delta-integer-codec
                 Key: CARBONDATA-1267
                 URL: https://issues.apache.org/jira/browse/CARBONDATA-1267
             Project: CarbonData
          Issue Type: Bug
          Components: core, data-load
    Affects Versions: 1.1.0
         Environment: suse11.3
            Reporter: xuchuanyin
            Priority: Critical


## BRIEF

when encoding column value by DeltaIntegerCodec, SHORT_INT may be a target type, but this
value doesnot exist in swith-case branch, so exception will be thrown in some case.

## ANALYZE´╝Ü

This error occurs in particular situation. In my case, there is a measure column called` BEGIN_TIME`
and its datatype is `LONG`. When encoding this measure, carbondata use the statistic information
`(min: 1497376581, max: 1497423838, decimal: 0 )` and finally decide to use `DeltaIntegerCodec`
encoder with source datatype `LONG` and target datatype `SHORT_INT(a internal datatype using
three bytes)`. But the encode method in `DeltaIntegerCodec` does not consider this situation,
so exception will be thrown.

# ERROR

Detail error message is shown below:
java.lang.RuntimeException: internal error: org.apache.carbondata.core.datastore.page.encoding.DeltaIntegerCodec[src
type: LONG, target type: SHORT_INT, stats(min: 1497376581, max: 1497423838, decimal: 0 )]
	at org.apache.carbondata.core.datastore.page.encoding.DeltaIntegerCodec$1.encode(DeltaIntegerCodec.java:147)
	at org.apache.carbondata.core.datastore.page.SafeFixLengthColumnPage.encode(SafeFixLengthColumnPage.java:324)
	at org.apache.carbondata.core.datastore.page.encoding.DeltaIntegerCodec.encode(DeltaIntegerCodec.java:71)
	at org.apache.carbondata.processing.store.TablePageEncoder.encodeAndCompressMeasures(TablePageEncoder.java:75)
	at org.apache.carbondata.processing.store.TablePageEncoder.encode(TablePageEncoder.java:64)
	at org.apache.carbondata.processing.store.CarbonFactDataHandlerColumnar.processDataRows(CarbonFactDataHandlerColumnar.java:364)
	at org.apache.carbondata.processing.store.CarbonFactDataHandlerColumnar.access$500(CarbonFactDataHandlerColumnar.java:65)
	at org.apache.carbondata.processing.store.CarbonFactDataHandlerColumnar$Producer.call(CarbonFactDataHandlerColumnar.java:749)
	at org.apache.carbondata.processing.store.CarbonFactDataHandlerColumnar$Producer.call(CarbonFactDataHandlerColumnar.java:726)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:748)




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