PREHOOK: query: drop table table_desc1
PREHOOK: type: DROPTABLE
POSTHOOK: query: drop table table_desc1
POSTHOOK: type: DROPTABLE
PREHOOK: query: drop table table_desc2
PREHOOK: type: DROPTABLE
POSTHOOK: query: drop table table_desc2
POSTHOOK: type: DROPTABLE
PREHOOK: query: create table table_desc1(key string, value string) clustered by (key, value)
sorted by (key DESC, value DESC) into 1 BUCKETS
PREHOOK: type: CREATETABLE
PREHOOK: Output: database:default
PREHOOK: Output: default@table_desc1
POSTHOOK: query: create table table_desc1(key string, value string) clustered by (key, value)
sorted by (key DESC, value DESC) into 1 BUCKETS
POSTHOOK: type: CREATETABLE
POSTHOOK: Output: database:default
POSTHOOK: Output: default@table_desc1
PREHOOK: query: create table table_desc2(key string, value string) clustered by (key, value)
sorted by (key DESC, value DESC) into 1 BUCKETS
PREHOOK: type: CREATETABLE
PREHOOK: Output: database:default
PREHOOK: Output: default@table_desc2
POSTHOOK: query: create table table_desc2(key string, value string) clustered by (key, value)
sorted by (key DESC, value DESC) into 1 BUCKETS
POSTHOOK: type: CREATETABLE
POSTHOOK: Output: database:default
POSTHOOK: Output: default@table_desc2
PREHOOK: query: insert overwrite table table_desc1 select key, value from src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: default@table_desc1
POSTHOOK: query: insert overwrite table table_desc1 select key, value from src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: default@table_desc1
POSTHOOK: Lineage: table_desc1.key SIMPLE [(src)src.FieldSchema(name:key, type:string, comment:default), ]
POSTHOOK: Lineage: table_desc1.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
PREHOOK: query: insert overwrite table table_desc2 select key, value from src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: default@table_desc2
POSTHOOK: query: insert overwrite table table_desc2 select key, value from src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: default@table_desc2
POSTHOOK: Lineage: table_desc2.key SIMPLE [(src)src.FieldSchema(name:key, type:string, comment:default), ]
POSTHOOK: Lineage: table_desc2.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
PREHOOK: query: -- The columns of the tables above are sorted in same order.
-- descending followed by descending
-- So, sort merge join should be performed

explain
select /*+ mapjoin(b) */ count(*) from table_desc1 a join table_desc2 b
on a.key=b.key and a.value=b.value where a.key < 10
PREHOOK: type: QUERY
POSTHOOK: query: -- The columns of the tables above are sorted in same order.
-- descending followed by descending
-- So, sort merge join should be performed

explain
select /*+ mapjoin(b) */ count(*) from table_desc1 a join table_desc2 b
on a.key=b.key and a.value=b.value where a.key < 10
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 depends on stages: Stage-1

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: a
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
            Filter Operator
              predicate: ((key is not null and value is not null) and (key < 10)) (type: boolean)
              Statistics: Num rows: 41 Data size: 435 Basic stats: COMPLETE Column stats: NONE
              Sorted Merge Bucket Map Join Operator
                condition map:
                     Inner Join 0 to 1
                keys:
                  0 key (type: string), value (type: string)
                  1 key (type: string), value (type: string)
                Group By Operator
                  aggregations: count()
                  mode: hash
                  outputColumnNames: _col0
                  Reduce Output Operator
                    sort order: 
                    value expressions: _col0 (type: bigint)
      Reduce Operator Tree:
        Group By Operator
          aggregations: count(VALUE._col0)
          mode: mergepartial
          outputColumnNames: _col0
          Select Operator
            expressions: _col0 (type: bigint)
            outputColumnNames: _col0
            File Output Operator
              compressed: false
              table:
                  input format: org.apache.hadoop.mapred.TextInputFormat
                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
                  serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe

  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: select /*+ mapjoin(b) */ count(*) from table_desc1 a join table_desc2 b
on a.key=b.key and a.value=b.value where a.key < 10
PREHOOK: type: QUERY
PREHOOK: Input: default@table_desc1
PREHOOK: Input: default@table_desc2
#### A masked pattern was here ####
POSTHOOK: query: select /*+ mapjoin(b) */ count(*) from table_desc1 a join table_desc2 b
on a.key=b.key and a.value=b.value where a.key < 10
POSTHOOK: type: QUERY
POSTHOOK: Input: default@table_desc1
POSTHOOK: Input: default@table_desc2
#### A masked pattern was here ####
22