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https://issues.apache.org/jira/browse/HIVE-6522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13915612#comment-13915612
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Jason Dere commented on HIVE-6522:
----------------------------------
I suspect this has something to do with the sum of the column values exceeding
the precision/scale of the value type (decimal(3,0 in this case), though I
haven't really looked into this so far. [~xuefuz], does HIVE-6459 solve this
problem?
> AVG() failure with decimal type
> -------------------------------
>
> Key: HIVE-6522
> URL: https://issues.apache.org/jira/browse/HIVE-6522
> Project: Hive
> Issue Type: Bug
> Components: UDF
> Affects Versions: 0.13.0
> Reporter: Jason Dere
>
> The following test fails:
> {code}
> hive> describe dec4;
> OK
> key string from deserializer
> c1 string from deserializer
> c2 decimal(10,2) from deserializer
> Time taken: 0.716 seconds, Fetched: 3 row(s)
> hive> select * from dec4;
> OK
> 484 484 484
> 98 NULL NULL
> 278 NULL NULL
> 255 255 255
> 409 NULL NULL
> 165 165 165
> 27 27 27
> 311 NULL NULL
> 86 NULL NULL
> 238 NULL NULL
> Time taken: 0.262 seconds, Fetched: 10 row(s)
> hive> select avg(cast(key as decimal(3,0))) from dec4;
> ...
> Task failed!
> Task ID:
> Stage-1
> Logs:
> /tmp/jdere/hive.log
> FAILED: Execution Error, return code 2 from
> org.apache.hadoop.hive.ql.exec.mr.MapRedTask
> {code}
> The logs show the following stack trace.
> {noformat}
> java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException:
> Hive Runtime Error while processing row (tag=0) [Error getting row data with
> exception java.lang.NumberFormatException: Zero length BigInteger
> at java.math.BigInteger.<init>(BigInteger.java:171)
> at
> org.apache.hadoop.hive.serde2.io.HiveDecimalWritable.getHiveDecimal(HiveDecimalWritable.java:85)
> at
> org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableHiveDecimalObjectInspector.getPrimitiveJavaObject(WritableHiveDecimalObjectInspector.java:43)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.buildJSONString(SerDeUtils.java:322)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.buildJSONString(SerDeUtils.java:392)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.buildJSONString(SerDeUtils.java:392)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.buildJSONString(SerDeUtils.java:392)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.getJSONString(SerDeUtils.java:236)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.getJSONString(SerDeUtils.java:222)
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:265)
> at
> org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:462)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:408)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:443)
> ]
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:282)
> at
> org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:462)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:408)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:443)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime
> Error while processing row (tag=0) [Error getting row data with exception
> java.lang.NumberFormatException: Zero length BigInteger
> at java.math.BigInteger.<init>(BigInteger.java:171)
> at
> org.apache.hadoop.hive.serde2.io.HiveDecimalWritable.getHiveDecimal(HiveDecimalWritable.java:85)
> at
> org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableHiveDecimalObjectInspector.getPrimitiveJavaObject(WritableHiveDecimalObjectInspector.java:43)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.buildJSONString(SerDeUtils.java:322)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.buildJSONString(SerDeUtils.java:392)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.buildJSONString(SerDeUtils.java:392)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.buildJSONString(SerDeUtils.java:392)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.getJSONString(SerDeUtils.java:236)
> at
> org.apache.hadoop.hive.serde2.SerDeUtils.getJSONString(SerDeUtils.java:222)
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:265)
> at
> org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:462)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:408)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:443)
> ]
> {noformat}
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