Jason Dere created HIVE-6208:
--------------------------------
Summary: user-defined aggregate functions cannot be used as
windowing function
Key: HIVE-6208
URL: https://issues.apache.org/jira/browse/HIVE-6208
Project: Hive
Issue Type: Bug
Components: UDF
Reporter: Jason Dere
Assignee: Jason Dere
Function registry does a pass to register all GenericUDAFs as window functions.
However any aggregate functions added after this (such as a user-added
temporary function) don't work as window functions:
hive> create temporary function mysum as
'org.apache.hadoop.hive.ql.udf.generic.GenericUDAFSum';
OK
Time taken: 0.0050 seconds
hive> explain select mysum(key) over () from src;
FAILED: NullPointerException null
java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.parse.PTFTranslator.translate(PTFTranslator.java:354)
at
org.apache.hadoop.hive.ql.parse.PTFTranslator.translate(PTFTranslator.java:194)
at
org.apache.hadoop.hive.ql.parse.WindowingComponentizer.next(WindowingComponentizer.java:86)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genWindowingPlan(SemanticAnalyzer.java:10721)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPostGroupByBodyPlan(SemanticAnalyzer.java:7904)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genBodyPlan(SemanticAnalyzer.java:7862)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:8678)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:8904)
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:310)
at
org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:65)
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:310)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:440)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:340)
at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:996)
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1039)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:932)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:922)
at
org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:268)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:220)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:424)
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: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:212)
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