In WHERE clause, Hive failed to resolve alias for subquery with join(s)
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Key: HIVE-915
URL: https://issues.apache.org/jira/browse/HIVE-915
Project: Hadoop Hive
Issue Type: Bug
Components: Query Processor
Affects Versions: 0.4.0
Environment: Hadoop v0.20.1
Latest code from Hive branch-0.4
Linux OS (both 32bit & 64bit)
Reporter: Nhan Nguyen
Priority: Critical
When executing the below query
FROM (SELECT ip, country, count(1) AS total FROM eventlog WHERE
prt_date=20091022 GROUP BY ip, country) t1 JOIN bot_ip t2 ON t1.ip=t2.ip
SELECT t1.ip, t1.country
WHERE t1.total>0;
I got "FAILED: Unknown exception : null"
WHERE clause will not know about the alias t1.
And below is the stack trace
2009-11-06 11:03:12,776 ERROR ql.Driver (SessionState.java:printError(279)) -
FAILED: Unknown exception : null
java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.parse.QBMetaData.getTableForAlias(QBMetaData.java:76)
at
org.apache.hadoop.hive.ql.parse.ASTPartitionPruner.getTableColumnDesc(ASTPartitionPruner.java:298)
at
org.apache.hadoop.hive.ql.parse.ASTPartitionPruner.genExprNodeDesc(ASTPartitionPruner.java:220)
at
org.apache.hadoop.hive.ql.parse.ASTPartitionPruner.genExprNodeDesc(ASTPartitionPruner.java:234)
at
org.apache.hadoop.hive.ql.parse.ASTPartitionPruner.genExprNodeDesc(ASTPartitionPruner.java:234)
at
org.apache.hadoop.hive.ql.parse.ASTPartitionPruner.genExprNodeDesc(ASTPartitionPruner.java:234)
at
org.apache.hadoop.hive.ql.parse.ASTPartitionPruner.addExpression(ASTPartitionPruner.java:397)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPartitionPruners(SemanticAnalyzer.java:624)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:4440)
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:76)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:249)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:281)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:123)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:181)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:287)
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)
It runs fine when omitting WHERE clause or WHERE clause doesn't reference to
any column of t1. It also runs fine if I make no join.
This is critical as sub-query is the current work-around for the unsupported
HAVING clause.
Hope this gets fixed soon.
Thanks
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