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https://issues.apache.org/jira/browse/HIVE-9195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14267277#comment-14267277
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Navis commented on HIVE-9195:
-----------------------------
[~ashutoshc] I see the case you've mentioned in union7, etc. and sound
reasonable to me. Make an issue for it and let's see what will happen.
> CBO changes constant to column type
> -----------------------------------
>
> Key: HIVE-9195
> URL: https://issues.apache.org/jira/browse/HIVE-9195
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Affects Versions: 0.14.0
> Reporter: Navis
> Assignee: Navis
> Fix For: 0.15.0
>
> Attachments: HIVE-9195.1.patch.txt, HIVE-9195.2.patch.txt,
> HIVE-9195.3.patch.txt
>
>
> Making testcase for HIVE-8613, I've found CBO changes constant expr to column
> expr. For example (only in test mode).
> {code}
> CREATE TABLE bucket (key double, value string) CLUSTERED BY (key) SORTED BY
> (key DESC) INTO 4 BUCKETS STORED AS TEXTFILE;
> load data local inpath '../../data/files/srcsortbucket1outof4.txt' INTO TABLE
> bucket;
> load data local inpath '../../data/files/srcsortbucket2outof4.txt' INTO TABLE
> bucket;
> load data local inpath '../../data/files/srcsortbucket3outof4.txt' INTO TABLE
> bucket;
> load data local inpath '../../data/files/srcsortbucket4outof4.txt' INTO TABLE
> bucket;
> select percentile_approx(case when key < 100 then cast('NaN' as double) else
> key end, 0.5) from bucket;
> {code}
> It works in shell but in TestCliDriver, that induces argument type exception
> creating udaf evaluator, which expects constant OI for second argument.
> {noformat}
> 2014-12-22 17:03:31,433 ERROR parse.SemanticAnalyzer
> (SemanticAnalyzer.java:analyzeInternal(10102)) - CBO failed, skipping CBO.
> org.apache.hadoop.hive.ql.exec.UDFArgumentTypeException: The second argument
> must be a constant, but double was passed instead.
> at
> org.apache.hadoop.hive.ql.udf.generic.GenericUDAFPercentileApprox.getEvaluator(GenericUDAFPercentileApprox.java:146)
> at
> org.apache.hadoop.hive.ql.exec.FunctionRegistry.getGenericUDAFEvaluator(FunctionRegistry.java:1160)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.getGenericUDAFEvaluator(SemanticAnalyzer.java:3794)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genGroupByPlanMapGroupByOperator(SemanticAnalyzer.java:4467)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genGroupByPlanMapAggrNoSkew(SemanticAnalyzer.java:5536)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genBodyPlan(SemanticAnalyzer.java:8884)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:9745)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:9638)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10086)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:224)
> at
> org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:74)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:224)
> at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:419)
> at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:305)
> at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1107)
> at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1155)
> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1044)
> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1034)
> at
> org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:206)
> at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:158)
> at
> org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:369)
> at
> org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:304)
> at
> org.apache.hadoop.hive.ql.QTestUtil.executeClient(QTestUtil.java:877)
> at
> org.apache.hadoop.hive.cli.TestCliDriver.runTest(TestCliDriver.java:136)
> at
> org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_udaf_percentile_approx_23(TestCliDriver.java:120)
> {noformat}
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