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https://issues.apache.org/jira/browse/HIVE-12012?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Dere updated HIVE-12012:
------------------------------
Attachment: HIVE-12012.1.patch
JsonSerDe seems to only support map values of type string. Attaching patch and
test cases.
[~sushanth], can you take a look? There do not seem to many tests for JsonSerDe
and I want to make sure I'm not breaking any behavior here.
> select query on json table with map type column fails
> -----------------------------------------------------
>
> Key: HIVE-12012
> URL: https://issues.apache.org/jira/browse/HIVE-12012
> Project: Hive
> Issue Type: Bug
> Components: Serializers/Deserializers
> Reporter: Jagruti Varia
> Assignee: Jason Dere
> Attachments: HIVE-12012.1.patch
>
>
> select query on json table throws this error if table contains map type
> column:
> {noformat}
> Failed with exception
> java.io.IOException:org.apache.hadoop.hive.serde2.SerDeException:
> org.codehaus.jackson.JsonParseException: Current token (FIELD_NAME) not
> numeric, can not use numeric value accessors
> at [Source: java.io.ByteArrayInputStream@295f79b; line: 1, column: 26]
> {noformat}
> steps to reproduce the issue:
> {noformat}
> hive> create table c_complex(a array<string>,b map<string,int>) row format
> serde 'org.apache.hive.hcatalog.data.JsonSerDe';
> OK
> Time taken: 0.319 seconds
> hive> insert into table c_complex select array('aaa'),map('aaa',1) from
> studenttab10k limit 2;
> Query ID = hrt_qa_20150826183232_47deb33a-19c0-4d2b-a92f-726659eb9413
> Total jobs = 1
> Launching Job 1 out of 1
> Status: Running (Executing on YARN cluster with App id
> application_1440603993714_0010)
> --------------------------------------------------------------------------------
> VERTICES STATUS TOTAL COMPLETED RUNNING PENDING FAILED
> KILLED
> --------------------------------------------------------------------------------
> Map 1 .......... SUCCEEDED 1 1 0 0 0
> 0
> Reducer 2 ...... SUCCEEDED 1 1 0 0 0
> 0
> --------------------------------------------------------------------------------
> VERTICES: 02/02 [==========================>>] 100% ELAPSED TIME: 11.75 s
>
> --------------------------------------------------------------------------------
> Loading data to table default.c_complex
> Table default.c_complex stats: [numFiles=1, numRows=2, totalSize=56,
> rawDataSize=0]
> OK
> Time taken: 13.706 seconds
> hive> select * from c_complex;
> OK
> Failed with exception
> java.io.IOException:org.apache.hadoop.hive.serde2.SerDeException:
> org.codehaus.jackson.JsonParseException: Current token (FIELD_NAME) not
> numeric, can not use numeric value accessors
> at [Source: java.io.ByteArrayInputStream@295f79b; line: 1, column: 26]
> Time taken: 0.115 seconds
> hive> select count(*) from c_complex;
> OK
> 2
> Time taken: 0.205 seconds, Fetched: 1 row(s)
> {noformat}
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