Nested UDAFs cause Hive Internal Error (NullPointerException) -------------------------------------------------------------
Key: HIVE-1399 URL: https://issues.apache.org/jira/browse/HIVE-1399 Project: Hadoop Hive Issue Type: Bug Components: Query Processor Affects Versions: 0.6.0 Reporter: Mayank Lahiri Fix For: 0.6.0 This query does not make "real-world" sense, and I'm guessing it's not even supported by HQL/SQL, but I'm pretty sure that it shouldn't be causing an internal error with a NullPointerException. "normal" just has one column called "val". I'm running on trunk, svn updated 5 minutes ago, ant clean package. SELECT percentile(val, percentile(val, 0.5)) FROM normal; 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$DefaultExprProcessor.getXpathOrFuncExprNodeDesc(TypeCheckProcFactory.java:587) at org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory$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:6241) at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genGroupByPlanMapGroupByOperator(SemanticAnalyzer.java:2301) at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genGroupByPlanMapAggr1MR(SemanticAnalyzer.java:2860) at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genBodyPlan(SemanticAnalyzer.java:5002) at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:5524) at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:6055) 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) I've also recreated this error with a GenericUDAF I'm writing, and also with the following: SELECT percentile(val, percentile()) FROM normal; SELECT avg(variance(dob_year)) FROM somedata; // this makes no sense, but still a NullPointerException -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.