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https://issues.apache.org/jira/browse/HIVE-9695?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jesus Camacho Rodriguez updated HIVE-9695:
------------------------------------------
Issue Type: Improvement (was: Bug)
> Redundant filter operator in reducer Vertex when CBO is disabled
> ----------------------------------------------------------------
>
> Key: HIVE-9695
> URL: https://issues.apache.org/jira/browse/HIVE-9695
> Project: Hive
> Issue Type: Improvement
> Components: Physical Optimizer
> Affects Versions: 2.0.0
> Reporter: Mostafa Mokhtar
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-9695.patch
>
>
> There is a redundant filter operator in reducer Vertex when CBO is disabled.
> Query
> {code}
> select
> ss_item_sk, ss_ticket_number, ss_store_sk
> from
> store_sales a, store_returns b, store
> where
> a.ss_item_sk = b.sr_item_sk
> and a.ss_ticket_number = b.sr_ticket_number
> and ss_sold_date_sk between 2450816 and 2451500
> and sr_returned_date_sk between 2450816 and 2451500
> and s_store_sk = ss_store_sk;
> {code}
> Plan snippet
> {code}
> Statistics: Num rows: 57439344 Data size: 1838059008 Basic stats: COMPLETE
> Column stats: COMPLETE
> Filter Operator
> predicate: (((((_col1 = _col27) and (_col8 = _col34)) and
> _col22 BETWEEN 2450816 AND 2451500) and _col45 BETWEEN 2450816 AND 2451500)
> and (_col49 = _col6)) (type: boolean)
> {code}
> Full plan with CBO disabled
> {code}
> STAGE DEPENDENCIES:
> Stage-1 is a root stage
> Stage-0 depends on stages: Stage-1
> STAGE PLANS:
> Stage: Stage-1
> Tez
> Edges:
> Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 3 (BROADCAST_EDGE), Map 4
> (SIMPLE_EDGE)
> DagName: mmokhtar_20150214182626_ad6820c7-b667-4652-ab25-cb60deed1a6d:13
> Vertices:
> Map 1
> Map Operator Tree:
> TableScan
> alias: b
> filterExpr: ((sr_item_sk is not null and sr_ticket_number
> is not null) and sr_returned_date_sk BETWEEN 2450816 AND 2451500) (type:
> boolean)
> Statistics: Num rows: 2370038095 Data size: 170506118656
> Basic stats: COMPLETE Column stats: COMPLETE
> Filter Operator
> predicate: (sr_item_sk is not null and sr_ticket_number
> is not null) (type: boolean)
> Statistics: Num rows: 706893063 Data size: 6498502768
> Basic stats: COMPLETE Column stats: COMPLETE
> Reduce Output Operator
> key expressions: sr_item_sk (type: int),
> sr_ticket_number (type: int)
> sort order: ++
> Map-reduce partition columns: sr_item_sk (type: int),
> sr_ticket_number (type: int)
> Statistics: Num rows: 706893063 Data size: 6498502768
> Basic stats: COMPLETE Column stats: COMPLETE
> value expressions: sr_returned_date_sk (type: int)
> Execution mode: vectorized
> Map 3
> Map Operator Tree:
> TableScan
> alias: store
> filterExpr: s_store_sk is not null (type: boolean)
> Statistics: Num rows: 1704 Data size: 3256276 Basic stats:
> COMPLETE Column stats: COMPLETE
> Filter Operator
> predicate: s_store_sk is not null (type: boolean)
> Statistics: Num rows: 1704 Data size: 6816 Basic stats:
> COMPLETE Column stats: COMPLETE
> Reduce Output Operator
> key expressions: s_store_sk (type: int)
> sort order: +
> Map-reduce partition columns: s_store_sk (type: int)
> Statistics: Num rows: 1704 Data size: 6816 Basic stats:
> COMPLETE Column stats: COMPLETE
> Execution mode: vectorized
> Map 4
> Map Operator Tree:
> TableScan
> alias: a
> filterExpr: (((ss_item_sk is not null and ss_ticket_number
> is not null) and ss_store_sk is not null) and ss_sold_date_sk BETWEEN 2450816
> AND 2451500) (type: boolean)
> Statistics: Num rows: 28878719387 Data size: 2405805439460
> Basic stats: COMPLETE Column stats: COMPLETE
> Filter Operator
> predicate: ((ss_item_sk is not null and ss_ticket_number
> is not null) and ss_store_sk is not null) (type: boolean)
> Statistics: Num rows: 8405840828 Data size: 110101408700
> Basic stats: COMPLETE Column stats: COMPLETE
> Reduce Output Operator
> key expressions: ss_item_sk (type: int),
> ss_ticket_number (type: int)
> sort order: ++
> Map-reduce partition columns: ss_item_sk (type: int),
> ss_ticket_number (type: int)
> Statistics: Num rows: 8405840828 Data size:
> 110101408700 Basic stats: COMPLETE Column stats: COMPLETE
> value expressions: ss_store_sk (type: int),
> ss_sold_date_sk (type: int)
> Execution mode: vectorized
> Reducer 2
> Reduce Operator Tree:
> Merge Join Operator
> condition map:
> Inner Join 0 to 1
> condition expressions:
> 0 {KEY.reducesinkkey0} {VALUE._col5} {KEY.reducesinkkey1}
> {VALUE._col20}
> 1 {KEY.reducesinkkey0} {KEY.reducesinkkey1} {VALUE._col17}
> outputColumnNames: _col1, _col6, _col8, _col22, _col27,
> _col34, _col45
> Statistics: Num rows: 57439343 Data size: 1148786860 Basic
> stats: COMPLETE Column stats: COMPLETE
> Map Join Operator
> condition map:
> Inner Join 0 to 1
> condition expressions:
> 0 {_col1} {_col6} {_col8} {_col22} {_col27} {_col34}
> {_col45}
> 1 {s_store_sk}
> keys:
> 0 _col6 (type: int)
> 1 s_store_sk (type: int)
> outputColumnNames: _col1, _col6, _col8, _col22, _col27,
> _col34, _col45, _col49
> input vertices:
> 1 Map 3
> Statistics: Num rows: 57439344 Data size: 1838059008 Basic
> stats: COMPLETE Column stats: COMPLETE
> Filter Operator
> predicate: (((((_col1 = _col27) and (_col8 = _col34)) and
> _col22 BETWEEN 2450816 AND 2451500) and _col45 BETWEEN 2450816 AND 2451500)
> and (_col49 = _col6)) (type: boolean)
> Statistics: Num rows: 1794979 Data size: 57439328 Basic
> stats: COMPLETE Column stats: COMPLETE
> Select Operator
> expressions: _col1 (type: int), _col8 (type: int),
> _col6 (type: int)
> outputColumnNames: _col0, _col1, _col2
> Statistics: Num rows: 1794979 Data size: 21539748 Basic
> stats: COMPLETE Column stats: COMPLETE
> File Output Operator
> compressed: false
> Statistics: Num rows: 1794979 Data size: 21539748
> Basic stats: COMPLETE Column stats: COMPLETE
> 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
> {code}
> Full plan with CBO enabled
> {code}
> STAGE DEPENDENCIES:
> Stage-1 is a root stage
> Stage-0 depends on stages: Stage-1
> STAGE PLANS:
> Stage: Stage-1
> Tez
> Edges:
> Map 4 <- Map 1 (BROADCAST_EDGE)
> Reducer 3 <- Map 2 (SIMPLE_EDGE), Map 4 (SIMPLE_EDGE)
> DagName: mmokhtar_20150214182525_63a9838f-db9f-40e9-8ae1-77c77143dccf:12
> Vertices:
> Map 1
> Map Operator Tree:
> TableScan
> alias: store
> filterExpr: s_store_sk is not null (type: boolean)
> Statistics: Num rows: 1704 Data size: 3256276 Basic stats:
> COMPLETE Column stats: COMPLETE
> Filter Operator
> predicate: s_store_sk is not null (type: boolean)
> Statistics: Num rows: 1704 Data size: 6816 Basic stats:
> COMPLETE Column stats: COMPLETE
> Select Operator
> expressions: s_store_sk (type: int)
> outputColumnNames: _col0
> Statistics: Num rows: 1704 Data size: 6816 Basic stats:
> COMPLETE Column stats: COMPLETE
> Reduce Output Operator
> key expressions: _col0 (type: int)
> sort order: +
> Map-reduce partition columns: _col0 (type: int)
> Statistics: Num rows: 1704 Data size: 6816 Basic
> stats: COMPLETE Column stats: COMPLETE
> Execution mode: vectorized
> Map 2
> Map Operator Tree:
> TableScan
> alias: b
> filterExpr: (sr_item_sk is not null and sr_ticket_number is
> not null) (type: boolean)
> Statistics: Num rows: 2370038095 Data size: 170506118656
> Basic stats: COMPLETE Column stats: COMPLETE
> Filter Operator
> predicate: (sr_item_sk is not null and sr_ticket_number
> is not null) (type: boolean)
> Statistics: Num rows: 706893063 Data size: 3670930516
> Basic stats: COMPLETE Column stats: COMPLETE
> Select Operator
> expressions: sr_item_sk (type: int), sr_ticket_number
> (type: int)
> outputColumnNames: _col0, _col1
> Statistics: Num rows: 706893063 Data size: 3670930516
> Basic stats: COMPLETE Column stats: COMPLETE
> Reduce Output Operator
> key expressions: _col0 (type: int), _col1 (type: int)
> sort order: ++
> Map-reduce partition columns: _col0 (type: int),
> _col1 (type: int)
> Statistics: Num rows: 706893063 Data size: 3670930516
> Basic stats: COMPLETE Column stats: COMPLETE
> Execution mode: vectorized
> Map 4
> Map Operator Tree:
> TableScan
> alias: a
> filterExpr: ((ss_store_sk is not null and ss_item_sk is not
> null) and ss_ticket_number is not null) (type: boolean)
> Statistics: Num rows: 28878719387 Data size: 2405805439460
> Basic stats: COMPLETE Column stats: COMPLETE
> Filter Operator
> predicate: ((ss_store_sk is not null and ss_item_sk is
> not null) and ss_ticket_number is not null) (type: boolean)
> Statistics: Num rows: 8405840828 Data size: 76478045388
> Basic stats: COMPLETE Column stats: COMPLETE
> Select Operator
> expressions: ss_item_sk (type: int), ss_store_sk (type:
> int), ss_ticket_number (type: int)
> outputColumnNames: _col0, _col1, _col2
> Statistics: Num rows: 8405840828 Data size: 76478045388
> Basic stats: COMPLETE Column stats: COMPLETE
> Map Join Operator
> condition map:
> Inner Join 0 to 1
> condition expressions:
> 0 {_col0} {_col1} {_col2}
> 1
> keys:
> 0 _col1 (type: int)
> 1 _col0 (type: int)
> outputColumnNames: _col0, _col1, _col2
> input vertices:
> 1 Map 1
> Statistics: Num rows: 8405840896 Data size:
> 100870090752 Basic stats: COMPLETE Column stats: COMPLETE
> Reduce Output Operator
> key expressions: _col0 (type: int), _col2 (type:
> int)
> sort order: ++
> Map-reduce partition columns: _col0 (type: int),
> _col2 (type: int)
> Statistics: Num rows: 8405840896 Data size:
> 100870090752 Basic stats: COMPLETE Column stats: COMPLETE
> value expressions: _col1 (type: int)
> Execution mode: vectorized
> Reducer 3
> Reduce Operator Tree:
> Merge Join Operator
> condition map:
> Inner Join 0 to 1
> condition expressions:
> 0 {KEY.reducesinkkey0} {VALUE._col0} {KEY.reducesinkkey1}
> 1
> outputColumnNames: _col0, _col1, _col2
> Statistics: Num rows: 75912751 Data size: 910953012 Basic
> stats: COMPLETE Column stats: COMPLETE
> Select Operator
> expressions: _col0 (type: int), _col2 (type: int), _col1
> (type: int)
> outputColumnNames: _col0, _col1, _col2
> Statistics: Num rows: 75912751 Data size: 910953012 Basic
> stats: COMPLETE Column stats: COMPLETE
> File Output Operator
> compressed: false
> Statistics: Num rows: 75912751 Data size: 910953012 Basic
> stats: COMPLETE Column stats: COMPLETE
> 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
> {code}
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