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https://issues.apache.org/jira/browse/HIVE-2145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Chinna Rao Lalam reassigned HIVE-2145:
--------------------------------------
Assignee: Chinna Rao Lalam
> NPE during parsing order-by expression
> --------------------------------------
>
> Key: HIVE-2145
> URL: https://issues.apache.org/jira/browse/HIVE-2145
> Project: Hive
> Issue Type: Bug
> Reporter: Ning Zhang
> Assignee: Chinna Rao Lalam
>
> The following query throws NPE, where it should have throw parsing exception.
> hive> select key, count(1) cnt from src group by key order by count(1) limit
> 10;
> select key, count(1) cnt from src group by key order by count(1) limit 10;
> FAILED: Hive Internal Error: java.lang.NullPointerException(null)
> java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc.newInstance(ExprNodeGenericFuncDesc.java:153)
> at
> org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory$DefaultExprProcessor.getXpathOrFuncExprNodeDesc(TypeCheckProcFactory.java:640)
> at
> org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory$DefaultExprProcessor.process(TypeCheckProcFactory.java:761)
> 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:125)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:102)
> at
> org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory.genExprNode(TypeCheckProcFactory.java:156)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genExprNodeDesc(SemanticAnalyzer.java:6830)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genExprNodeDesc(SemanticAnalyzer.java:6788)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genReduceSinkPlan(SemanticAnalyzer.java:4303)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genBodyPlan(SemanticAnalyzer.java:5461)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:6022)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:6607)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:238)
> at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:340)
> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:790)
> at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:209)
> at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:286)
> at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:514)
> 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)
> Correct syntax should be:
> hive> select key, count(1) cnt from src group by key order by cnt limit 10;
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