Hi, Impala is a product of Cloudera. You might request help per: https://groups.google.com/a/cloudera.org/forum/#!forum/impala-user <https://groups.google.com/a/cloudera.org/forum/#!forum/impala-user>
BR, Alex > On 26 Feb 2015, at 17:15, Vitale, Tom <thomas.vit...@credit-suisse.com> wrote: > > I used sqoop to import an MS SQL Server table into an Avro file on HDFS. No > problem. Then I tried to create an external Impala table using the following > DDL: > > CREATE EXTERNAL TABLE AvroTable > STORED AS AVRO > LOCATION '/tmp/AvroTable'; > > I got the error “ERROR: AnalysisException: Error loading Avro schema: No Avro > schema provided in SERDEPROPERTIES or TBLPROPERTIES for table: > default.AvroTable” > > So I extracted the schema from the Avro file using the avro-tools-1.7.4.jar > (-getschema) into a JSON file, then per the recommendation above, changed the > DDL to point to it: > > CREATE EXTERNAL TABLE AvroTable > STORED AS AVRO > LOCATION '/tmp/AvroTable' > TBLPROPERTIES( > 'serialization.format'='1', > > 'avro.schema.url'='hdfs://xxxxxxxx.xxxxxxxx.xxxxxxxx.net/tmp/AvroTable.schema' > <hdfs://xxxxxxxx.xxxxxxxx.xxxxxxxx.net/tmp/AvroTable.schema'> > ); > > This worked fine. But my question is, why do you have to do this? The > schema is already in the Avro file – that’s where I got the JSON schema file > that I point to in the TBLPROPERTIES parameter! > > Thanks, Tom > > Tom Vitale > CREDIT SUISSE > Information Technology | Infra Arch & Strategy NY, KIVP > Eleven Madison Avenue | 10010-3629 New York | United States > Phone +1 212 538 0708 > thomas.vit...@credit-suisse.com <mailto:thomas.vit...@credit-suisse.com> | > www.credit-suisse.com <http://www.credit-suisse.com/> > > > > > ============================================================================== > Please access the attached hyperlink for an important electronic > communications disclaimer: > http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html > <http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html> > ==============================================================================
