Greg Phillips created HIVE-11288:
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Summary: Avro SerDe InstanceCache returns incorrect schema
Key: HIVE-11288
URL: https://issues.apache.org/jira/browse/HIVE-11288
Project: Hive
Issue Type: Bug
Reporter: Greg Phillips
To reproduce this error, take two fields in an avro schema document matching
the following:
"type" : { "type": "array", "items": [ "null", { "type": "map", "values": [
"null", "string" ] } ] }
"type" : { "type": "map", "values": [ "null" , { "type": "array", "items": [
"null" , "string"] } ] }
After creating two tables in hive with these schemas, the describe statement on
each of them will only return the schema for the first one loaded. This is due
to a hashCode() collision in the InstanceCache.
A patch will be included in this ticket shortly which removes the hashCode call
from the InstanceCache's internal HashMap, and instead provides the entire
schema object.
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