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From "Chao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8008) NPE while reading null decimal value
Date Fri, 05 Sep 2014 23:02:30 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8008?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14123751#comment-14123751
] 

Chao commented on HIVE-8008:
----------------------------

This error is caused by {{HiveDecimal::enforcePrecisionScale}}. Here, calling {{BigDecimal::setScale}}
may increase the number of int digits (as in the above example), but we've already passed
the int digits check. Therefore, the result {{bd}} may contain more digits than the maximum.


> NPE while reading null decimal value
> ------------------------------------
>
>                 Key: HIVE-8008
>                 URL: https://issues.apache.org/jira/browse/HIVE-8008
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Chao
>            Assignee: Chao
>
> Say you have this table {{dec_test}}:
> {code}
> dec                 	decimal(10,0)       	                    
> {code}
> If the table has a row that is 9999999999.5, and if we do
> {code}
> select * from dec_test;
> {code}
> it will crash with NPE:
> {code}
> 2014-09-05 14:08:56,023 ERROR [main]: CliDriver (SessionState.java:printError(545)) -
Failed with exception java.io.IOException:org.apache.hadoop.hive.ql.metadata.HiveException:
java.lang.NullPointerException
> java.io.IOException: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.NullPointerException
>   at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:151)
>   at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:1531)
>   at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:285)
>   at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:220)
>   at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:423)
>   at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:792)
>   at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:686)
>   at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:625)
>   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>   at java.lang.reflect.Method.invoke(Method.java:606)
>   at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.NullPointerException
>   at org.apache.hadoop.hive.ql.exec.ListSinkOperator.processOp(ListSinkOperator.java:90)
>   at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
>   at org.apache.hadoop.hive.ql.exec.SelectOperator.processOp(SelectOperator.java:87)
>   at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
>   at org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:92)
>   at org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:544)
>   at org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:536)
>   at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:137)
>   ... 12 more
> Caused by: java.lang.NullPointerException
>   at org.apache.hadoop.hive.serde2.lazy.LazyUtils.writePrimitiveUTF8(LazyUtils.java:265)
>   at org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serialize(LazySimpleSerDe.java:486)
>   at org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serializeField(LazySimpleSerDe.java:439)
>   at org.apache.hadoop.hive.serde2.DelimitedJSONSerDe.serializeField(DelimitedJSONSerDe.java:71)
>   at org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serialize(LazySimpleSerDe.java:423)
>   at org.apache.hadoop.hive.ql.exec.DefaultFetchFormatter.convert(DefaultFetchFormatter.java:70)
>   at org.apache.hadoop.hive.ql.exec.DefaultFetchFormatter.convert(DefaultFetchFormatter.java:39)
>   at org.apache.hadoop.hive.ql.exec.ListSinkOperator.processOp(ListSinkOperator.java:87)
>   ... 19 more
> {code}



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