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Posted to user@hive.apache.org by Eva Tse <et...@netflix.com> on 2009/06/15 02:34:28 UTC

Query execution error on cast w/ lazyserde w/ join ...

We get this error when having ³cast (tablename.properties['time'] as
int)/3600.0² in the select clause of a hive query (with join). Is this a
known problem/limitation?
BTW, this only happens when this table is joined with another table in the
query.

Thanks,
Eva. 

java.lang.ClassCastException: java.util.HashMap cannot be cast to
org.apache.hadoop.hive.serde2.lazy.LazyMap
    at 
org.apache.hadoop.hive.serde2.objectinspector.LazyMapObjectInspector.getMapV
alueElement(LazyMapObjectInspector.java:85)
    at 
org.apache.hadoop.hive.ql.exec.ExprNodeIndexEvaluator.evaluate(ExprNodeIndex
Evaluator.java:86)
    at 
org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEv
aluator.java:99)
    at 
org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEv
aluator.java:99)
    at 
org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEv
aluator.java:99)
    at 
org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:67
)
    at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
    at 
org.apache.hadoop.hive.ql.exec.FilterOperator.process(FilterOperator.java:70
)
    at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
    at 
org.apache.hadoop.hive.ql.exec.JoinOperator.createForwardJoinObject(JoinOper
ator.java:298)
    at 
org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:541)
    at 
org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
    at 
org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
    at 
org.apache.hadoop.hive.ql.exec.JoinOperator.checkAndGenObject(JoinOperator.j
ava:571)
    at 
org.apache.hadoop.hive.ql.exec.JoinOperator.endGroup(JoinOperator.java:553)
    at 
org.apache.hadoop.hive.ql.exec.ExecReducer.reduce(ExecReducer.java:145)
    at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:430)
    at org.apache.hadoop.mapred.Child.main(Child.java:155)

RE: Query execution error on cast w/ lazyserde w/ join ...

Posted by Ashish Thusoo <at...@facebook.com>.
We will start on 0.4.0 in a couple of weeks at the latest once we are more comfortable with the trunk deployment that we are running in production and yes the patch for 0.20 fix will be a part of the release.

Ashish

________________________________
From: Zheng Shao [mailto:zshao9@gmail.com]
Sent: Sunday, June 14, 2009 7:20 PM
To: hive-user@hadoop.apache.org
Subject: Re: Query execution error on cast w/ lazyserde w/ join ...

There is currently no way to get Hive version from the command line.

I will leave the other 2 questions to Ashish and Joydeep.

Zheng

On Sun, Jun 14, 2009 at 6:48 PM, Eva Tse <et...@netflix.com>> wrote:
Great thanks! We are using hive 0.3.0 based on what I know.

BTW, is there a quick way to find out current hive version on command line like 'hive -v'? That would be helpful.

Also, when would 0.40 be released? And would it work with 0.20.x w/o a patch?

Thanks for the info!
Eva.



On 6/14/09 6:21 PM, "Zheng Shao" <zs...@gmail.com>> wrote:

Hi Eva,

Which version of Hive are you using? Is it Hive 0.3.0 release or Hive trunk?

This bug is recently fixed in https://issues.apache.org/jira/browse/HIVE-495 It's not back-ported to Hive 0.3.0.

I would suggest you to try hive svn trunk (I think it's time to make Hive 0.4.0 release from trunk soon).

Zheng

On Sun, Jun 14, 2009 at 5:34 PM, Eva Tse <et...@netflix.com>> wrote:
We get this error when having "cast (tablename.properties['time'] as int)/3600.0" in the select clause of a hive query (with join). Is this a known problem/limitation?
BTW, this only happens when this table is joined with another table in the query.

Thanks,
Eva.

java.lang.ClassCastException: java.util.HashMap cannot be cast to org.apache.hadoop.hive.serde2.lazy.LazyMap
    at org.apache.hadoop.hive.serde2.objectinspector.LazyMapObjectInspector.getMapValueElement(LazyMapObjectInspector.java:85)
    at org.apache.hadoop.hive.ql.exec.ExprNodeIndexEvaluator.evaluate(ExprNodeIndexEvaluator.java:86)
    at org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
    at org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
    at org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
    at org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:67)
    at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
    at org.apache.hadoop.hive.ql.exec.FilterOperator.process(FilterOperator.java:70)
    at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.createForwardJoinObject(JoinOperator.java:298)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:541)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.checkAndGenObject(JoinOperator.java:571)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.endGroup(JoinOperator.java:553)
    at org.apache.hadoop.hive.ql.exec.ExecReducer.reduce(ExecReducer.java:145)
    at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:430)
    at org.apache.hadoop.mapred.Child.main(Child.java:155)





--
Yours,
Zheng

RE: Query execution error on cast w/ lazyserde w/ join ...

Posted by Ashish Thusoo <at...@facebook.com>.
I expect us to start cutting the branch for 0.4 in the next 2-3 weeks. Once we move our internal systems to the head of the trunk we can safely cut a branch out.

Ashish

________________________________
From: Joydeep Sen Sarma [mailto:jssarma@facebook.com]
Sent: Monday, June 22, 2009 10:59 AM
To: hive-user@hadoop.apache.org
Subject: RE: Query execution error on cast w/ lazyserde w/ join ...

Yeah - we will get the 0.20 patch committed before 0.4

________________________________
From: Zheng Shao [mailto:zshao9@gmail.com]
Sent: Sunday, June 14, 2009 7:20 PM
To: hive-user@hadoop.apache.org
Subject: Re: Query execution error on cast w/ lazyserde w/ join ...

There is currently no way to get Hive version from the command line.

I will leave the other 2 questions to Ashish and Joydeep.

Zheng
On Sun, Jun 14, 2009 at 6:48 PM, Eva Tse <et...@netflix.com>> wrote:
Great thanks! We are using hive 0.3.0 based on what I know.

BTW, is there a quick way to find out current hive version on command line like 'hive -v'? That would be helpful.

Also, when would 0.40 be released? And would it work with 0.20.x w/o a patch?

Thanks for the info!
Eva.



On 6/14/09 6:21 PM, "Zheng Shao" <zs...@gmail.com>> wrote:
Hi Eva,

Which version of Hive are you using? Is it Hive 0.3.0 release or Hive trunk?

This bug is recently fixed in https://issues.apache.org/jira/browse/HIVE-495 It's not back-ported to Hive 0.3.0.

I would suggest you to try hive svn trunk (I think it's time to make Hive 0.4.0 release from trunk soon).

Zheng

On Sun, Jun 14, 2009 at 5:34 PM, Eva Tse <et...@netflix.com>> wrote:
We get this error when having "cast (tablename.properties['time'] as int)/3600.0" in the select clause of a hive query (with join). Is this a known problem/limitation?
BTW, this only happens when this table is joined with another table in the query.

Thanks,
Eva.

java.lang.ClassCastException: java.util.HashMap cannot be cast to org.apache.hadoop.hive.serde2.lazy.LazyMap
    at org.apache.hadoop.hive.serde2.objectinspector.LazyMapObjectInspector.getMapValueElement(LazyMapObjectInspector.java:85)
    at org.apache.hadoop.hive.ql.exec.ExprNodeIndexEvaluator.evaluate(ExprNodeIndexEvaluator.java:86)
    at org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
    at org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
    at org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
    at org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:67)
    at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
    at org.apache.hadoop.hive.ql.exec.FilterOperator.process(FilterOperator.java:70)
    at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.createForwardJoinObject(JoinOperator.java:298)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:541)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.checkAndGenObject(JoinOperator.java:571)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.endGroup(JoinOperator.java:553)
    at org.apache.hadoop.hive.ql.exec.ExecReducer.reduce(ExecReducer.java:145)
    at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:430)
    at org.apache.hadoop.mapred.Child.main(Child.java:155)




--
Yours,
Zheng

RE: Query execution error on cast w/ lazyserde w/ join ...

Posted by Joydeep Sen Sarma <js...@facebook.com>.
Yeah - we will get the 0.20 patch committed before 0.4

________________________________
From: Zheng Shao [mailto:zshao9@gmail.com]
Sent: Sunday, June 14, 2009 7:20 PM
To: hive-user@hadoop.apache.org
Subject: Re: Query execution error on cast w/ lazyserde w/ join ...

There is currently no way to get Hive version from the command line.

I will leave the other 2 questions to Ashish and Joydeep.

Zheng
On Sun, Jun 14, 2009 at 6:48 PM, Eva Tse <et...@netflix.com>> wrote:
Great thanks! We are using hive 0.3.0 based on what I know.

BTW, is there a quick way to find out current hive version on command line like 'hive -v'? That would be helpful.

Also, when would 0.40 be released? And would it work with 0.20.x w/o a patch?

Thanks for the info!
Eva.



On 6/14/09 6:21 PM, "Zheng Shao" <zs...@gmail.com>> wrote:
Hi Eva,

Which version of Hive are you using? Is it Hive 0.3.0 release or Hive trunk?

This bug is recently fixed in https://issues.apache.org/jira/browse/HIVE-495 It's not back-ported to Hive 0.3.0.

I would suggest you to try hive svn trunk (I think it's time to make Hive 0.4.0 release from trunk soon).

Zheng

On Sun, Jun 14, 2009 at 5:34 PM, Eva Tse <et...@netflix.com>> wrote:
We get this error when having "cast (tablename.properties['time'] as int)/3600.0" in the select clause of a hive query (with join). Is this a known problem/limitation?
BTW, this only happens when this table is joined with another table in the query.

Thanks,
Eva.

java.lang.ClassCastException: java.util.HashMap cannot be cast to org.apache.hadoop.hive.serde2.lazy.LazyMap
    at org.apache.hadoop.hive.serde2.objectinspector.LazyMapObjectInspector.getMapValueElement(LazyMapObjectInspector.java:85)
    at org.apache.hadoop.hive.ql.exec.ExprNodeIndexEvaluator.evaluate(ExprNodeIndexEvaluator.java:86)
    at org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
    at org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
    at org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
    at org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:67)
    at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
    at org.apache.hadoop.hive.ql.exec.FilterOperator.process(FilterOperator.java:70)
    at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.createForwardJoinObject(JoinOperator.java:298)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:541)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.checkAndGenObject(JoinOperator.java:571)
    at org.apache.hadoop.hive.ql.exec.JoinOperator.endGroup(JoinOperator.java:553)
    at org.apache.hadoop.hive.ql.exec.ExecReducer.reduce(ExecReducer.java:145)
    at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:430)
    at org.apache.hadoop.mapred.Child.main(Child.java:155)




--
Yours,
Zheng

Re: Query execution error on cast w/ lazyserde w/ join ...

Posted by Zheng Shao <zs...@gmail.com>.
There is currently no way to get Hive version from the command line.

I will leave the other 2 questions to Ashish and Joydeep.

Zheng

On Sun, Jun 14, 2009 at 6:48 PM, Eva Tse <et...@netflix.com> wrote:

>  Great thanks! We are using hive 0.3.0 based on what I know.
>
> BTW, is there a quick way to find out current hive version on command line
> like ‘hive –v’? That would be helpful.
>
> Also, when would 0.40 be released? And would it work with 0.20.x w/o a
> patch?
>
> Thanks for the info!
> Eva.
>
>
>
> On 6/14/09 6:21 PM, "Zheng Shao" <zs...@gmail.com> wrote:
>
> Hi Eva,
>
> Which version of Hive are you using? Is it Hive 0.3.0 release or Hive
> trunk?
>
> This bug is recently fixed in
> https://issues.apache.org/jira/browse/HIVE-495 It's not back-ported to
> Hive 0.3.0.
>
> I would suggest you to try hive svn trunk (I think it's time to make Hive
> 0.4.0 release from trunk soon).
>
> Zheng
>
> On Sun, Jun 14, 2009 at 5:34 PM, Eva Tse <et...@netflix.com> wrote:
>
> We get this error when having “cast (tablename.properties['time'] as
> int)/3600.0” in the select clause of a hive query (with join). Is this a
> known problem/limitation?
> BTW, this only happens when this table is joined with another table in the
> query.
>
> Thanks,
> Eva.
>
> java.lang.ClassCastException: java.util.HashMap cannot be cast to
> org.apache.hadoop.hive.serde2.lazy.LazyMap
>     at
> org.apache.hadoop.hive.serde2.objectinspector.LazyMapObjectInspector.getMapValueElement(LazyMapObjectInspector.java:85)
>     at
> org.apache.hadoop.hive.ql.exec.ExprNodeIndexEvaluator.evaluate(ExprNodeIndexEvaluator.java:86)
>     at
> org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
>     at
> org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
>     at
> org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
>     at
> org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:67)
>     at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
>     at
> org.apache.hadoop.hive.ql.exec.FilterOperator.process(FilterOperator.java:70)
>     at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.createForwardJoinObject(JoinOperator.java:298)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:541)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.checkAndGenObject(JoinOperator.java:571)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.endGroup(JoinOperator.java:553)
>     at
> org.apache.hadoop.hive.ql.exec.ExecReducer.reduce(ExecReducer.java:145)
>     at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:430)
>     at org.apache.hadoop.mapred.Child.main(Child.java:155)
>
>
>
>


-- 
Yours,
Zheng

Re: Query execution error on cast w/ lazyserde w/ join ...

Posted by Eva Tse <et...@netflix.com>.
Great thanks! We are using hive 0.3.0 based on what I know.

BTW, is there a quick way to find out current hive version on command line
like Œhive ­v¹? That would be helpful.

Also, when would 0.40 be released? And would it work with 0.20.x w/o a
patch? 

Thanks for the info!
Eva.


On 6/14/09 6:21 PM, "Zheng Shao" <zs...@gmail.com> wrote:

> Hi Eva,
> 
> Which version of Hive are you using? Is it Hive 0.3.0 release or Hive trunk?
> 
> This bug is recently fixed in https://issues.apache.org/jira/browse/HIVE-495
> It's not back-ported to Hive 0.3.0.
> 
> I would suggest you to try hive svn trunk (I think it's time to make Hive
> 0.4.0 release from trunk soon).
> 
> Zheng
> 
> On Sun, Jun 14, 2009 at 5:34 PM, Eva Tse <et...@netflix.com> wrote:
>> We get this error when having ³cast (tablename.properties['time'] as
>> int)/3600.0² in the select clause of a hive query (with join). Is this a
>> known problem/limitation?
>> BTW, this only happens when this table is joined with another table in the
>> query.
>> 
>> Thanks,
>> Eva. 
>> 
>> java.lang.ClassCastException: java.util.HashMap cannot be cast to
>> org.apache.hadoop.hive.serde2.lazy.LazyMap
>>     at 
>> org.apache.hadoop.hive.serde2.objectinspector.LazyMapObjectInspector.getMapVa
>> lueElement(LazyMapObjectInspector.java:85)
>>     at 
>> org.apache.hadoop.hive.ql.exec.ExprNodeIndexEvaluator.evaluate(ExprNodeIndexE
>> valuator.java:86)
>>     at 
>> org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEva
>> luator.java:99)
>>     at 
>> org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEva
>> luator.java:99)
>>     at 
>> org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEva
>> luator.java:99)
>>     at 
>> org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:67)
>>     at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
>>     at 
>> org.apache.hadoop.hive.ql.exec.FilterOperator.process(FilterOperator.java:70)
>>     at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
>>     at 
>> org.apache.hadoop.hive.ql.exec.JoinOperator.createForwardJoinObject(JoinOpera
>> tor.java:298)
>>     at 
>> org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:541)
>>     at 
>> org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
>>     at 
>> org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
>>     at 
>> org.apache.hadoop.hive.ql.exec.JoinOperator.checkAndGenObject(JoinOperator.ja
>> va:571)
>>     at 
>> org.apache.hadoop.hive.ql.exec.JoinOperator.endGroup(JoinOperator.java:553)
>>     at 
>> org.apache.hadoop.hive.ql.exec.ExecReducer.reduce(ExecReducer.java:145)
>>     at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:430)
>>     at org.apache.hadoop.mapred.Child.main(Child.java:155)
> 
>

Re: Query execution error on cast w/ lazyserde w/ join ...

Posted by Zheng Shao <zs...@gmail.com>.
Hi Eva,

Which version of Hive are you using? Is it Hive 0.3.0 release or Hive trunk?


This bug is recently fixed in
https://issues.apache.org/jira/browse/HIVE-495It's not back-ported to
Hive 0.3.0.

I would suggest you to try hive svn trunk (I think it's time to make Hive
0.4.0 release from trunk soon).

Zheng

On Sun, Jun 14, 2009 at 5:34 PM, Eva Tse <et...@netflix.com> wrote:

>  We get this error when having “cast (tablename.properties['time'] as
> int)/3600.0” in the select clause of a hive query (with join). Is this a
> known problem/limitation?
> BTW, this only happens when this table is joined with another table in the
> query.
>
> Thanks,
> Eva.
>
> java.lang.ClassCastException: java.util.HashMap cannot be cast to
> org.apache.hadoop.hive.serde2.lazy.LazyMap
>     at
> org.apache.hadoop.hive.serde2.objectinspector.LazyMapObjectInspector.getMapValueElement(LazyMapObjectInspector.java:85)
>     at
> org.apache.hadoop.hive.ql.exec.ExprNodeIndexEvaluator.evaluate(ExprNodeIndexEvaluator.java:86)
>     at
> org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
>     at
> org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
>     at
> org.apache.hadoop.hive.ql.exec.ExprNodeFuncEvaluator.evaluate(ExprNodeFuncEvaluator.java:99)
>     at
> org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:67)
>     at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
>     at
> org.apache.hadoop.hive.ql.exec.FilterOperator.process(FilterOperator.java:70)
>     at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:383)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.createForwardJoinObject(JoinOperator.java:298)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:541)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.genObject(JoinOperator.java:530)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.checkAndGenObject(JoinOperator.java:571)
>     at
> org.apache.hadoop.hive.ql.exec.JoinOperator.endGroup(JoinOperator.java:553)
>     at
> org.apache.hadoop.hive.ql.exec.ExecReducer.reduce(ExecReducer.java:145)
>     at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:430)
>     at org.apache.hadoop.mapred.Child.main(Child.java:155)
>



-- 
Yours,
Zheng