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From "Ning Zhang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-1308) <boolean> = <boolean> throws NPE
Date Wed, 14 Apr 2010 21:50:48 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12857114#action_12857114
] 

Ning Zhang commented on HIVE-1308:
----------------------------------

Should we also add this for >= and <= etc. MySQL supports it..

> <boolean> = <boolean> throws NPE
> --------------------------------
>
>                 Key: HIVE-1308
>                 URL: https://issues.apache.org/jira/browse/HIVE-1308
>             Project: Hadoop Hive
>          Issue Type: Bug
>    Affects Versions: 0.6.0
>            Reporter: Paul Yang
>            Assignee: Paul Yang
>         Attachments: HIVE-1308.1.patch
>
>
> Workaround is to just use <boolean> or NOT <boolean>
> {code}
> hive> select true=true from src;
> FAILED: Hive Internal Error: java.lang.NullPointerException(null)
> java.lang.NullPointerException
>         at org.apache.hadoop.hive.ql.udf.generic.GenericUDFUtils$ConversionHelper.<init>(GenericUDFUtils.java:212)
>         at org.apache.hadoop.hive.ql.udf.generic.GenericUDFBridge.initialize(GenericUDFBridge.java:138)
>         at org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.newInstance(ExprNodeGenericFuncDesc.java:153)
>         at org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory$DefaultExprProcessor.getXpathOrFuncExprNodeDesc(TypeCheckProcFactory.java:587)
>         at org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory$DefaultExprProcessor.process(TypeCheckProcFactory.java:708)
>         at org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher.dispatch(DefaultRuleDispatcher.java:89)
>         at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:88)
>         at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.walk(DefaultGraphWalker.java:128)
>         at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:102)
>         at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genExprNodeDesc(SemanticAnalyzer.java:6136)
>         at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genSelectPlan(SemanticAnalyzer.java:1831)
>         at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genSelectPlan(SemanticAnalyzer.java:1663)
>         at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genBodyPlan(SemanticAnalyzer.java:4911)
>         at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:5421)
>         at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:5952)
>         at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:126)
>         at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:304)
>         at org.apache.hadoop.hive.ql.Driver.run(Driver.java:377)
>         at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:138)
>         at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:197)
>         at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:303)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> {code}

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