Hi Ray, 4000 bytes is the maximum VARCHAR size allowed on Oracle 9i/10g/11g. As far as I know this is the smallest maximum VARCHAR size out of the databases we currently try to support (MySQL, Oracle, Derby, etc).
Carl On Tue, Jun 15, 2010 at 1:15 PM, Ray Duong <[email protected]> wrote: > Thank John/Carl, > > Yep, there seems to be a limit on the 767 byte size. So I see the patch > HIVE-1364 to set it to 4000 bytes. I'm using Db-derby, do you know if there > is a limit beyond 4000 bytes? > > -ray > > Error: > Caused by: ERROR 22001: A truncation error was encountered trying to shrink > VARCHAR 'segment:ITC_10#ITC_1001,segment:CITC_10#ITC_1001,segment:ITC&' to > length 767. > > > > > On Tue, Jun 15, 2010 at 12:26 PM, Carl Steinbach <[email protected]>wrote: > >> Hi Ray, >> >> There is currently a 767 byte size limit on SERDEPROPERTIES values (see >> http://issues.apache.org/jira/browse/HIVE-1364). It's possible that >> you're bumping into this limitation (assuming you abbreviated the column >> names in your example). >> >> >> On Tue, Jun 15, 2010 at 12:03 PM, John Sichi <[email protected]> wrote: >> >>> That exception is coming from the metastore (trying to write the table >>> definition). Could you dig down into the Hive logs to see if you can get >>> the underlying cause? >>> >>> You can get the logs to spew on console by adding "-hiveconf >>> hive.root.logger=DEBUG,console" to your Hive CLI invocation. >>> >>> JVS >>> >>> On Jun 15, 2010, at 11:57 AM, Ray Duong wrote: >>> >>> Hi, >>> >>> I'm trying to map a Hbase table in Hive that contains large number of >>> columns. Since Hbase is designed to be a wide table, does Hive/Hbase >>> integration have any set limitation on the number of columns it can map in >>> one table? I seem to hit a limit at 10 columns. >>> >>> Thanks, >>> -ray >>> >>> create external table hbase_t1 >>> ( >>> key string, >>> f1_a string, >>> f2_a string, >>> f1_b string, >>> f2_b string, >>> ... >>> ... >>> f1_m string, >>> f2_m string, >>> >>> ) >>> STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler' >>> WITH SERDEPROPERTIES ("hbase.columns.mapping" = >>> ":key,f1:a,f2:a,f1:b,f2:b,f1:c,f2:c,f1:d,f2:d,f1:e,f2:e,f1:f,f2:f,f1:g,f2:g,f1:h,f2:h,f1:i,f2:i,f1:j,f2:j,f1:k,f2:k,f1:l,f2:l,f1:m,f2:m" >>> ) >>> TBLPROPERTIES("hbase.table.name" = "t1"); >>> >>> Error Message: >>> >>> FAILED: Error in metadata: javax.jdo.JDODataStoreException: Put request >>> failed : INSERT INTO `SERDE_PARAMS` (`PARAM_VALUE`,`SERDE_ID`,`PARAM_KEY`) >>> VALUES (?,?,?) >>> NestedThrowables: >>> org.datanucleus.store.mapped.exceptions.MappedDatastoreException: INSERT >>> INTO `SERDE_PARAMS` (`PARAM_VALUE`,`SERDE_ID`,`PARAM_KEY`) VALUES (?,?,?) >>> FAILED: Execution Error, return code 1 from >>> org.apache.hadoop.hive.ql.exec.DDLTask >>> >>> >>> >>> >>> >> >
