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https://issues.apache.org/jira/browse/FLINK-17803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17112742#comment-17112742
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Jingsong Lee commented on FLINK-17803:
--------------------------------------
[~zouyunhe] Re-open this, we should throws a better exception, FYI
> Should throws a readable exception when group by Map type
> ---------------------------------------------------------
>
> Key: FLINK-17803
> URL: https://issues.apache.org/jira/browse/FLINK-17803
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.10.0
> Reporter: zouyunhe
> Priority: Major
> Fix For: 1.11.0
>
>
> We use flink 1.10.0 , blink planner, to submit a batch sql job to read
> from a hive table which contains map type fields, and then aggregate. the
> sql as below:
> ```
> create view aaa
> as select * from table1 where event_id = '0103002' and `day`='2020-05-13'
> and `hour`='13';
> create view view_1
> as
> select
> `day`,
> a.rtime as itime,
> a.uid as uid,
> trim(BOTH a.event.log_1['scene']) as refer_list,
> T.s as abflags,
> a.hdid as hdid,
> a.country as country
> from aaa as a
> left join LATERAL TABLE(splitByChar(trim(BOTH a.event.log_1['abflag]),
> ',')) as T(s) on true;
> {color:#172b4d}CREATE VIEW view_6 as {color}
> {color:#172b4d} SELECT{color}
> {color:#172b4d} `uid`,{color}
> {color:#172b4d} `refer_list`,{color}
> {color:#172b4d} `abflag`,{color}
> {color:#172b4d} last_value(country){color}
> {color:#172b4d} FROM view_1{color}
> {color:#172b4d} where `refer_list` in ('WELOG_NEARBY', 'WELOG_FOLLOW',
> 'WELOG_POPULAR'){color}
> {color:#172b4d} GROUP BY `uid`, `refer_list`, abflag;{color}
> insert into ............
> ```
> when submit the job, the exception occurs as below:
> org.apache.flink.client.program.ProgramInvocationException: The main method
> caused an error: scala.MatchError: MAP (of class
> org.apache.flink.table.types.logical.LogicalTypeRoot)
> at
> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:335)
> at
> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:205)
> at
> org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:138)
> at
> org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:664)
> at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)
> at
> org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:895)
> at
> org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1754)
> at
> org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
> at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968)
> Caused by: java.lang.RuntimeException: scala.MatchError: MAP (of class
> org.apache.flink.table.types.logical.LogicalTypeRoot)
> at
> sg.bigo.streaming.sql.StreamingSqlRunner.main(StreamingSqlRunner.java:143)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:321)
> ... 11 more
> Caused by: scala.MatchError: MAP (of class
> org.apache.flink.table.types.logical.LogicalTypeRoot)
> at
> org.apache.flink.table.planner.codegen.CodeGenUtils$.hashCodeForType(CodeGenUtils.scala:212)
> at
> org.apache.flink.table.planner.codegen.HashCodeGenerator$.$anonfun$generateCodeBody$1(HashCodeGenerator.scala:97)
> at
> scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:238)
> at
> scala.collection.IndexedSeqOptimized.foreach(IndexedSeqOptimized.scala:36)
>
> and then we found the method hashCodeForType in the CodeGenUtils class do
> not match MAP type. and we fix it as below
> ```
> def hashCodeForType(
> ctx: CodeGeneratorContext, t: LogicalType, term: String): String =
> t.getTypeRoot match
> { case BOOLEAN => s"$\\{className[JBoolean]}
> .hashCode($term)"
> case MAP => s"$\{className[BaseMap]}.getHashCode($term)" //the code we add
> case TINYINT => s"$\{className[JByte]}.hashCode($term)"
> ```
> then the job can be sumitted, it run for a while, another exception occurs:
> java.lang.RuntimeException: Could not instantiate generated class
> 'HashAggregateWithKeys$1543'
> at
> org.apache.flink.table.runtime.generated.GeneratedClass.newInstance(GeneratedClass.java:67)
> at
> org.apache.flink.table.runtime.operators.CodeGenOperatorFactory.createStreamOperator(CodeGenOperatorFactory.java:46)
> at
> org.apache.flink.streaming.api.operators.StreamOperatorFactoryUtil.createOperator(StreamOperatorFactoryUtil.java:48)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:156)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:433)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:461)
> at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:707)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:532)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.flink.util.FlinkRuntimeException:
> org.apache.flink.api.common.InvalidProgramException: Table program cannot be
> compiled. This is a bug. Please file an issue.
> at
> org.apache.flink.table.runtime.generated.CompileUtils.compile(CompileUtils.java:68)
> at
> org.apache.flink.table.runtime.generated.GeneratedClass.compile(GeneratedClass.java:78)
> at
> org.apache.flink.table.runtime.generated.GeneratedClass.newInstance(GeneratedClass.java:65)
> ... 8 more
> Caused by:
> org.apache.flink.shaded.guava18.com.google.common.util.concurrent.UncheckedExecutionException:
> org.apache.flink.api.common.InvalidProgramException: Table program cannot be
> compiled. This is a bug. Please file an issue.
> at
> org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2203)
> at
> org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache.get(LocalCache.java:3937)
> at
> org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4739)
> at
> org.apache.flink.table.runtime.generated.CompileUtils.compile(CompileUtils.java:66)
> ... 10 more
> Caused by: org.apache.flink.api.common.InvalidProgramException: Table
> program cannot be compiled. This is a bug. Please file an issue.
> at
> org.apache.flink.table.runtime.generated.CompileUtils.doCompile(CompileUtils.java:81)
> at
> org.apache.flink.table.runtime.generated.CompileUtils.lambda$compile$1(CompileUtils.java:66)
> at
> org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4742)
> at
> org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3527)
> at
> org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2319)
> at
> org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2282)
> at
> org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2197)
> ... 13 more
> Caused by: org.codehaus.commons.compiler.CompileException: Line 459, Column
> 57: A method named "compareTo" is not declared in any enclosing class nor any
> supertype, nor through a static import
> at org.codehaus.janino.UnitCompiler.compileError(UnitCompiler.java:12124)
> at org.codehaus.janino.UnitCompiler.findIMethod(UnitCompiler.java:8997)
> at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:5060)
> at org.codehaus.janino.UnitCompiler.access$9100(UnitCompiler.java:215)
> at
> org.codehaus.janino.UnitCompiler$16.visitMethodInvocation(UnitCompiler.java:4421)
> at
> org.codehaus.janino.UnitCompiler$16.visitMethodInvocation(UnitCompiler.java:4394)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:5062)
> at org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java:4394)
> at org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java:5575)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2580)
> at org.codehaus.janino.UnitCompiler.access$2700(UnitCompiler.java:215)
>
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