[HIVE-6968] list bucketing feature does not update the location map for unpartitioned tables

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.11.0, 0.12.0, 0.13.0, 0.14.0
• Fix Version/s: 0.14.0
• Assignee: Prasanth Jayachandran
• Reporter: Prasanth Jayachandran
• Created: 24/Apr/14 00:41
• Updated: 13/Nov/14 19:40
• Resolved: 29/Apr/14 01:18

Description

list bucketing feature maintains a map of skewed columns/values to location in metastore. This map is not getting updated for unpartitioned tables. For partitioned tables the location map gets updated properly. To reproduce the issue

hive>set hive.mapred.supports.subdirectories=true;
hive>set mapred.input.dir.recursive=true;

hive>create table t(col1 string, col2 string);
hive>load  data local inpath '/home/hadoop/a.txt' into table t; 
hive> select * from t;                                                                   
OK
1	a
2	b
3	c
4	a
5	b
6	a

hive>create tablet1(r1 string, r2 string) skewed by (r2) on (‘a’) stored as directories;
hive>insert into table t1 select * from t;
hive>desc extended t1;
OK
r1                  	string              	                    
r2                  	string              	                    
	 	 
Detailed Table Information	Table(tableName:t1, dbName:default, owner:pjayachandran, createTime:1398295903, lastAccessTime:0, retention:0, sd:StorageDescriptor(cols:[FieldSchema(name:r1, type:string, comment:null), FieldSchema(name:r2, type:string, comment:null)], location:file:/app/warehouse/t1, inputFormat:org.apache.hadoop.mapred.TextInputFormat, outputFormat:org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat, compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null, serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe, parameters:{serialization.format=1}), bucketCols:[], sortCols:[], parameters:{}, skewedInfo:SkewedInfo(skewedColNames:[r2], skewedColValues:[[a]], skewedColValueLocationMaps:{}), storedAsSubDirectories:true), partitionKeys:[], parameters:{numFiles=6, COLUMN_STATS_ACCURATE=true, transient_lastDdlTime=1398297887, numRows=6, totalSize=72, rawDataSize=18}, viewOriginalText:null, viewExpandedText:null, tableType:MANAGED_TABLE)	
Time taken: 0.119 seconds, Fetched: 4 row(s)

as seen from describe output skewedColValueLocationMaps is empty

Issue Links

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