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Impala could crash or return wrong result if it uses codegend avro decoding function to scan avro file that has different schema than table schema. With AVRO-1617 fix, we make sure Impala doesn't use codegen if table schema has less columns than file schema. Change-Id: I268419e421404ad6b084482dee417634f17ecf60 Reviewed-on: http://gerrit.cloudera.org:8080/1696 Reviewed-by: Juan Yu <jyu@cloudera.com> Tested-by: Internal Jenkins
This folder contains the files necessary to test Impala support for Avro schema resolution (along with the TestAvroSchemaResolution query test). create_table.sql creates a functional_avro_snap.schema_resolution_test table and loads records1.avro and records2.avro. The .avro files were created via the following commands: java -jar ~/avro-tools-1.7.4.jar fromjson --schema-file file_schema1.avsc --codec snappy records1.json > records1.avro java -jar ~/avro-tools-1.7.4.jar fromjson --schema-file file_schema2.avsc --codec snappy records2.json > records2.avro create_table.sql, file_schema1.avsc and file_schema2.avsc contain the relevant schema definitions.