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https://issues.apache.org/jira/browse/HIVE-6835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13977616#comment-13977616
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Xuefu Zhang commented on HIVE-6835:
-----------------------------------
Not sure if I understand your problem correctly, but I do understand that the
scope of the proposed change has got bigger than your original approach. For
any caller of serde initialization, we should be able to find whether serde
instance extends AbstractSerde. If so, we cast the serde instance to
AbstractSerde and call initialize(arg1, arg2, arg3). Otherwise, call
serde.initialize(arg1, arg2). Does this solve the problem?
> Reading of partitioned Avro data fails if partition schema does not match
> table schema
> --------------------------------------------------------------------------------------
>
> Key: HIVE-6835
> URL: https://issues.apache.org/jira/browse/HIVE-6835
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.12.0
> Reporter: Anthony Hsu
> Assignee: Anthony Hsu
> Attachments: HIVE-6835.1.patch, HIVE-6835.2.patch, HIVE-6835.3.patch
>
>
> To reproduce:
> {code}
> create table testarray (a array<string>);
> load data local inpath '/home/ahsu/test/array.txt' into table testarray;
> # create partitioned Avro table with one array column
> create table avroarray partitioned by (y string) row format serde
> 'org.apache.hadoop.hive.serde2.avro.AvroSerDe' with serdeproperties
> ('avro.schema.literal'='{"namespace":"test","name":"avroarray","type":
> "record", "fields": [ { "name":"a", "type":{"type":"array","items":"string"}
> } ] }') STORED as INPUTFORMAT
> 'org.apache.hadoop.hive.ql.io.avro.AvroContainerInputFormat' OUTPUTFORMAT
> 'org.apache.hadoop.hive.ql.io.avro.AvroContainerOutputFormat';
> insert into table avroarray partition(y=1) select * from testarray;
> # add an int column with a default value of 0
> alter table avroarray set serde
> 'org.apache.hadoop.hive.serde2.avro.AvroSerDe' with
> serdeproperties('avro.schema.literal'='{"namespace":"test","name":"avroarray","type":
> "record", "fields": [ {"name":"intfield","type":"int","default":0},{
> "name":"a", "type":{"type":"array","items":"string"} } ] }');
> # fails with ClassCastException
> select * from avroarray;
> {code}
> The select * fails with:
> {code}
> Failed with exception java.io.IOException:java.lang.ClassCastException:
> org.apache.hadoop.hive.serde2.objectinspector.StandardListObjectInspector
> cannot be cast to
> org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector
> {code}
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