[FEAT MERGE]4.2 PX Feature
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qianchanger
@ -268,6 +268,7 @@ _enable_plan_cache_mem_diagnosis
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_enable_protocol_diagnose
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_enable_px_batch_rescan
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_enable_px_bloom_filter_sync
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_enable_px_fast_reclaim
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_enable_px_ordered_coord
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_enable_reserved_user_dcl_restriction
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_enable_resource_limit_spec
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@ -595,6 +595,7 @@ select 0xffffffffff & table_id, table_name, table_type, database_id, part_num fr
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12384 __all_virtual_thread 2 201001 1
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12393 __all_virtual_virtual_long_ops_status_mysql_sys_agent 2 201001 1
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12395 __all_virtual_timestamp_service 2 201001 1
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12397 __all_virtual_px_p2p_datahub 2 201001 1
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20001 GV$OB_PLAN_CACHE_STAT 1 201001 1
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20002 GV$OB_PLAN_CACHE_PLAN_STAT 1 201001 1
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20003 SCHEMATA 1 201002 1
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@ -893,6 +894,10 @@ select 0xffffffffff & table_id, table_name, table_type, database_id, part_num fr
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21404 V$OB_TIMESTAMP_SERVICE 1 201001 1
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21417 DBA_OB_EXTERNAL_TABLE_FILES 1 201001 1
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21418 ALL_OB_EXTERNAL_TABLE_FILES 1 201001 1
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21419 GV$OB_PX_P2P_DATAHUB 1 201001 1
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21420 V$OB_PX_P2P_DATAHUB 1 201001 1
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21421 GV$SQL_JOIN_FILTER 1 201001 1
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21422 V$SQL_JOIN_FILTER 1 201001 1
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21423 DBA_OB_TABLE_STAT_STALE_INFO 1 201001 1
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21425 CDB_OB_EXTERNAL_TABLE_FILES 1 201001 1
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check sys table count and table_id range success
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@ -11,19 +11,20 @@ select /*+ USE_PX parallel(3) */* from
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(select c1,count(c2) c2 from t1 group by c1)c) a join
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(select c1,count(*) c2 from t2 group by c1)b on a.c1=b.c1 ;
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Query Plan
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===============================================
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|ID|OPERATOR |NAME |
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-----------------------------------------------
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|0 |PX COORDINATOR | |
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|1 |└─EXCHANGE OUT DISTR |:EX10001|
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|2 | └─HASH JOIN | |
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|3 | ├─PX PARTITION ITERATOR | |
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|4 | │ └─TABLE FULL SCAN |t1 |
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|5 | └─EXCHANGE IN DISTR | |
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|6 | └─EXCHANGE OUT DISTR (PKEY)|:EX10000|
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|7 | └─PX BLOCK ITERATOR | |
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|8 | └─TABLE FULL SCAN |t2 |
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===============================================
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=================================================
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|ID|OPERATOR |NAME |
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-------------------------------------------------
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|0 |PX COORDINATOR | |
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|1 |└─EXCHANGE OUT DISTR |:EX10001|
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|2 | └─HASH JOIN | |
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|3 | ├─PART JOIN FILTER CREATE |:RF0000 |
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|4 | │ └─PX PARTITION ITERATOR | |
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|5 | │ └─TABLE FULL SCAN |t1 |
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|6 | └─EXCHANGE IN DISTR | |
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|7 | └─EXCHANGE OUT DISTR (PKEY) |:EX10000|
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|8 | └─PX BLOCK HASH JOIN-FILTER|:RF0000 |
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|9 | └─TABLE FULL SCAN |t2 |
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=================================================
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Outputs & filters:
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-------------------------------------
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0 - output([INTERNAL_FUNCTION(t1.c1, 1, t2.c1, 1)]), filter(nil), rowset=256
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@ -32,16 +33,18 @@ Outputs & filters:
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2 - output([t1.c1], [t2.c1]), filter(nil), rowset=256
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equal_conds([t1.c1 = t2.c1]), other_conds(nil)
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3 - output([t1.c1]), filter(nil), rowset=256
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affinitize
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RF_TYPE(bloom), RF_EXPR[t1.c1]
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4 - output([t1.c1]), filter(nil), rowset=256
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affinitize
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5 - output([t1.c1]), filter(nil), rowset=256
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access([t1.c1]), partitions(p[0-9])
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is_index_back=false, is_global_index=false,
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range_key([t1.c1]), range(MIN ; MAX)always true
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5 - output([t2.c1]), filter(nil), rowset=256
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6 - output([t2.c1]), filter(nil), rowset=256
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(#keys=1, [t2.c1]), dop=3
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7 - output([t2.c1]), filter(nil), rowset=256
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(#keys=1, [t2.c1]), dop=3
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8 - output([t2.c1]), filter(nil), rowset=256
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9 - output([t2.c1], [PARTITION_ID]), filter(nil), rowset=256
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access([t2.c1]), partitions(p[0-5])
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is_index_back=false, is_global_index=false,
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range_key([t2.c1]), range(MIN ; MAX)always true
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@ -73,12 +76,12 @@ Query Plan
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|4 | └─EXCHANGE OUT DISTR (HASH) |:EX10001|
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|5 | └─HASH GROUP BY | |
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|6 | └─HASH JOIN | |
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|7 | ├─PART JOIN FILTER CREATE |:BF0000 |
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|7 | ├─PART JOIN FILTER CREATE |:RF0000 |
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|8 | │ └─EXCHANGE IN DISTR | |
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|9 | │ └─EXCHANGE OUT DISTR (PKEY)|:EX10000|
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|10| │ └─PX BLOCK ITERATOR | |
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|11| │ └─TABLE FULL SCAN |b |
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|12| └─PX PARTITION HASH JOIN-FILTER|:BF0000 |
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|12| └─PX PARTITION HASH JOIN-FILTER|:RF0000 |
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|13| └─TABLE FULL SCAN |a |
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=========================================================
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Outputs & filters:
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@ -96,6 +99,7 @@ Outputs & filters:
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6 - output([a.c2]), filter(nil), rowset=256
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equal_conds([a.c1 = b.c1]), other_conds(nil)
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7 - output([b.c1]), filter(nil), rowset=256
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RF_TYPE(bloom), RF_EXPR[b.c1]
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8 - output([b.c1]), filter(nil), rowset=256
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9 - output([b.c1]), filter(nil), rowset=256
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(#keys=1, [b.c1]), dop=3
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@ -283,20 +283,21 @@ select /*+ parallel(2) pq_distribute(a hash hash) NO_USE_HASH_AGGREGATION */ a.c
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## broadcast shuffle
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EXPLAIN BASIC select /*+ parallel(2) pq_distribute(b broadcast none) */ * from t1 a, t2 b where a.c1=b.c2 order by a.c1,b.c1;
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Query Plan
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=================================================
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|ID|OPERATOR |NAME |
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-------------------------------------------------
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|0 |PX COORDINATOR MERGE SORT | |
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|1 |└─EXCHANGE OUT DISTR |:EX10001|
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|2 | └─SORT | |
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|3 | └─HASH JOIN | |
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|4 | ├─PX PARTITION ITERATOR | |
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|5 | │ └─TABLE FULL SCAN |b |
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|6 | └─EXCHANGE IN DISTR | |
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|7 | └─EXCHANGE OUT DISTR (PKEY)|:EX10000|
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|8 | └─PX BLOCK ITERATOR | |
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|9 | └─TABLE FULL SCAN |a |
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=================================================
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===================================================
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|ID|OPERATOR |NAME |
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---------------------------------------------------
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|0 |PX COORDINATOR MERGE SORT | |
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|1 |└─EXCHANGE OUT DISTR |:EX10001|
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|2 | └─SORT | |
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|3 | └─HASH JOIN | |
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|4 | ├─PART JOIN FILTER CREATE |:RF0000 |
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|5 | │ └─PX PARTITION ITERATOR | |
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|6 | │ └─TABLE FULL SCAN |b |
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|7 | └─EXCHANGE IN DISTR | |
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|8 | └─EXCHANGE OUT DISTR (PKEY) |:EX10000|
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|9 | └─PX BLOCK HASH JOIN-FILTER|:RF0000 |
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|10| └─TABLE FULL SCAN |a |
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===================================================
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Outputs & filters:
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-------------------------------------
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0 - output([INTERNAL_FUNCTION(a.c1, a.c2, b.c1, b.c2)]), filter(nil), rowset=256
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@ -307,17 +308,19 @@ Outputs & filters:
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sort_keys([a.c1, ASC], [b.c1, ASC])
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3 - output([a.c1], [b.c1], [b.c2], [a.c2]), filter(nil), rowset=256
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equal_conds([a.c1 = b.c2]), other_conds(nil)
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4 - output([b.c2], [b.c1]), filter(nil), rowset=256
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affinitize
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4 - output([b.c1], [b.c2]), filter(nil), rowset=256
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RF_TYPE(bloom), RF_EXPR[b.c2]
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5 - output([b.c2], [b.c1]), filter(nil), rowset=256
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affinitize
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6 - output([b.c2], [b.c1]), filter(nil), rowset=256
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access([b.c2], [b.c1]), partitions(p[0-5])
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is_index_back=false, is_global_index=false,
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range_key([b.__pk_increment]), range(MIN ; MAX)always true
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6 - output([a.c1], [a.c2]), filter(nil), rowset=256
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7 - output([a.c1], [a.c2]), filter(nil), rowset=256
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(#keys=1, [a.c1]), dop=2
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8 - output([a.c1], [a.c2]), filter(nil), rowset=256
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(#keys=1, [a.c1]), dop=2
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9 - output([a.c1], [a.c2]), filter(nil), rowset=256
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10 - output([a.c1], [a.c2], [PARTITION_ID]), filter(nil), rowset=256
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access([a.c1], [a.c2]), partitions(p[0-4])
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is_index_back=false, is_global_index=false,
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range_key([a.__pk_increment]), range(MIN ; MAX)always true
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