Index: data/files/empty1.txt =================================================================== Index: data/files/empty2.txt =================================================================== Index: ql/src/java/org/apache/hadoop/hive/ql/exec/ExecMapper.java =================================================================== --- ql/src/java/org/apache/hadoop/hive/ql/exec/ExecMapper.java (revision 926844) +++ ql/src/java/org/apache/hadoop/hive/ql/exec/ExecMapper.java (working copy) @@ -320,6 +320,7 @@ // detecting failed executions by exceptions thrown by the operator tree // ideally hadoop should let us know whether map execution failed or not try { + inputFileChanged(); mo.close(abort); if (fetchOperators != null) { MapredLocalWork localWork = mo.getConf().getMapLocalWork(); Index: ql/src/java/org/apache/hadoop/hive/ql/exec/SMBMapJoinOperator.java =================================================================== --- ql/src/java/org/apache/hadoop/hive/ql/exec/SMBMapJoinOperator.java (revision 926844) +++ ql/src/java/org/apache/hadoop/hive/ql/exec/SMBMapJoinOperator.java (working copy) @@ -82,6 +82,8 @@ firstRow = true; closeCalled = false; + + this.firstFetchHappened = false; nextGroupStorage = new HashMap>>(); candidateStorage = new HashMap>>(); @@ -476,8 +478,27 @@ return; } closeCalled = true; + + if ((this.getExecContext() != null && this.getExecContext().inputFileChanged) + || !firstFetchHappened) { + //set up the fetch operator for the new input file. + for (Map.Entry entry : fetchOperators.entrySet()) { + String alias = entry.getKey(); + FetchOperator fetchOp = entry.getValue(); + fetchOp.clearFetchContext(); + setUpFetchOpContext(fetchOp, alias); + } + this.getExecContext().inputFileChanged = false; + firstFetchHappened = true; + for (Byte t : order) { + if(t != (byte)posBigTable) { + fetchNextGroup(t); + } + } + } + joinFinalLeftData(); - this.firstFetchHappened = false; + //clean up for (Byte alias : order) { if(alias != (byte) posBigTable) { Index: ql/src/test/queries/clientpositive/smb_mapjoin_7.q =================================================================== --- ql/src/test/queries/clientpositive/smb_mapjoin_7.q (revision 0) +++ ql/src/test/queries/clientpositive/smb_mapjoin_7.q (revision 0) @@ -0,0 +1,54 @@ +set hive.enforce.bucketing = true; +set hive.enforce.sorting = true; +set hive.exec.reducers.max = 1; + +drop table smb_bucket4_1; +CREATE TABLE smb_bucket4_1(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS; + +drop table smb_bucket4_2; +CREATE TABLE smb_bucket4_2(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS; + +drop table smb_join_results; +drop table smb_join_results_empty_bigtable; +drop table normal_join_results; +create table smb_join_results(k1 int, v1 string, k2 int, v2 string); +create table smb_join_results_empty_bigtable(k1 int, v1 string, k2 int, v2 string); +create table normal_join_results(k1 int, v1 string, k2 int, v2 string); + +load data local inpath '../data/files/empty1.txt' into table smb_bucket4_1; +load data local inpath '../data/files/empty2.txt' into table smb_bucket4_1; + +insert overwrite table smb_bucket4_2 +select * from src; + +set hive.optimize.bucketmapjoin = true; +set hive.optimize.bucketmapjoin.sortedmerge = true; + +insert overwrite table smb_join_results_empty_bigtable +select /*+mapjoin(b)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key; + +insert overwrite table smb_join_results_empty_bigtable +select /*+mapjoin(b)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key; + +select * from smb_join_results_empty_bigtable order by k1; + +explain +insert overwrite table smb_join_results +select /*+mapjoin(a)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key; + +insert overwrite table smb_join_results +select /*+mapjoin(a)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key; + +select * from smb_join_results order by k1; + +insert overwrite table normal_join_results select * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key; + +select sum(hash(k1)) as k1, sum(hash(k2)) as k2, sum(hash(v1)) as v1, sum(hash(v2)) as v2 from normal_join_results; +select sum(hash(k1)) as k1, sum(hash(k2)) as k2, sum(hash(v1)) as v1, sum(hash(v2)) as v2 from smb_join_results; +select sum(hash(k1)) as k1, sum(hash(k2)) as k2, sum(hash(v1)) as v1, sum(hash(v2)) as v2 from smb_join_results_empty_bigtable; + +drop table smb_join_results; +drop table smb_join_results_empty_bigtable; +drop table normal_join_results; +drop table smb_bucket4_1; +drop table smb_bucket4_2; Index: ql/src/test/results/clientpositive/smb_mapjoin_7.q.out =================================================================== --- ql/src/test/results/clientpositive/smb_mapjoin_7.q.out (revision 0) +++ ql/src/test/results/clientpositive/smb_mapjoin_7.q.out (revision 0) @@ -0,0 +1,1255 @@ +PREHOOK: query: drop table smb_bucket4_1 +PREHOOK: type: DROPTABLE +POSTHOOK: query: drop table smb_bucket4_1 +POSTHOOK: type: DROPTABLE +PREHOOK: query: CREATE TABLE smb_bucket4_1(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS +PREHOOK: type: CREATETABLE +POSTHOOK: query: CREATE TABLE smb_bucket4_1(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS +POSTHOOK: type: CREATETABLE +POSTHOOK: Output: default@smb_bucket4_1 +PREHOOK: query: drop table smb_bucket4_2 +PREHOOK: type: DROPTABLE +POSTHOOK: query: drop table smb_bucket4_2 +POSTHOOK: type: DROPTABLE +PREHOOK: query: CREATE TABLE smb_bucket4_2(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS +PREHOOK: type: CREATETABLE +POSTHOOK: query: CREATE TABLE smb_bucket4_2(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS +POSTHOOK: type: CREATETABLE +POSTHOOK: Output: default@smb_bucket4_2 +PREHOOK: query: drop table smb_join_results +PREHOOK: type: DROPTABLE +POSTHOOK: query: drop table smb_join_results +POSTHOOK: type: DROPTABLE +PREHOOK: query: drop table smb_join_results_empty_bigtable +PREHOOK: type: DROPTABLE +POSTHOOK: query: drop table smb_join_results_empty_bigtable +POSTHOOK: type: DROPTABLE +PREHOOK: query: drop table normal_join_results +PREHOOK: type: DROPTABLE +POSTHOOK: query: drop table normal_join_results +POSTHOOK: type: DROPTABLE +PREHOOK: query: create table smb_join_results(k1 int, v1 string, k2 int, v2 string) +PREHOOK: type: CREATETABLE +POSTHOOK: query: create table smb_join_results(k1 int, v1 string, k2 int, v2 string) +POSTHOOK: type: CREATETABLE +POSTHOOK: Output: default@smb_join_results +PREHOOK: query: create table smb_join_results_empty_bigtable(k1 int, v1 string, k2 int, v2 string) +PREHOOK: type: CREATETABLE +POSTHOOK: query: create table smb_join_results_empty_bigtable(k1 int, v1 string, k2 int, v2 string) +POSTHOOK: type: CREATETABLE +POSTHOOK: Output: default@smb_join_results_empty_bigtable +PREHOOK: query: create table normal_join_results(k1 int, v1 string, k2 int, v2 string) +PREHOOK: type: CREATETABLE +POSTHOOK: query: create table normal_join_results(k1 int, v1 string, k2 int, v2 string) +POSTHOOK: type: CREATETABLE +POSTHOOK: Output: default@normal_join_results +PREHOOK: query: load data local inpath '../data/files/empty1.txt' into table smb_bucket4_1 +PREHOOK: type: LOAD +POSTHOOK: query: load data local inpath '../data/files/empty1.txt' into table smb_bucket4_1 +POSTHOOK: type: LOAD +POSTHOOK: Output: default@smb_bucket4_1 +PREHOOK: query: load data local inpath '../data/files/empty2.txt' into table smb_bucket4_1 +PREHOOK: type: LOAD +POSTHOOK: query: load data local inpath '../data/files/empty2.txt' into table smb_bucket4_1 +POSTHOOK: type: LOAD +POSTHOOK: Output: default@smb_bucket4_1 +PREHOOK: query: insert overwrite table smb_bucket4_2 +select * from src +PREHOOK: type: QUERY +PREHOOK: Input: default@src +PREHOOK: Output: default@smb_bucket4_2 +POSTHOOK: query: insert overwrite table smb_bucket4_2 +select * from src +POSTHOOK: type: QUERY +POSTHOOK: Input: default@src +POSTHOOK: Output: default@smb_bucket4_2 +PREHOOK: query: insert overwrite table smb_join_results_empty_bigtable +select /*+mapjoin(b)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key +PREHOOK: type: QUERY +PREHOOK: Input: default@smb_bucket4_2 +PREHOOK: Input: default@smb_bucket4_1 +PREHOOK: Output: default@smb_join_results_empty_bigtable +POSTHOOK: query: insert overwrite table smb_join_results_empty_bigtable +select /*+mapjoin(b)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key +POSTHOOK: type: QUERY +POSTHOOK: Input: default@smb_bucket4_2 +POSTHOOK: Input: default@smb_bucket4_1 +POSTHOOK: Output: default@smb_join_results_empty_bigtable +PREHOOK: query: insert overwrite table smb_join_results_empty_bigtable +select /*+mapjoin(b)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key +PREHOOK: type: QUERY +PREHOOK: Input: default@smb_bucket4_2 +PREHOOK: Input: default@smb_bucket4_1 +PREHOOK: Output: default@smb_join_results_empty_bigtable +POSTHOOK: query: insert overwrite table smb_join_results_empty_bigtable +select /*+mapjoin(b)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key +POSTHOOK: type: QUERY +POSTHOOK: Input: default@smb_bucket4_2 +POSTHOOK: Input: default@smb_bucket4_1 +POSTHOOK: Output: default@smb_join_results_empty_bigtable +PREHOOK: query: select * from smb_join_results_empty_bigtable order by k1 +PREHOOK: type: QUERY +PREHOOK: Input: default@smb_join_results_empty_bigtable +PREHOOK: Output: file:/Users/heyongqiang/Documents/workspace/Hive_RCFile/build/ql/scratchdir/hive_2010-03-23_17-43-07_414_9075895455978344401/10000 +POSTHOOK: query: select * from smb_join_results_empty_bigtable order by k1 +POSTHOOK: type: QUERY +POSTHOOK: Input: default@smb_join_results_empty_bigtable +POSTHOOK: Output: 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469 val_469 +NULL NULL 469 val_469 +NULL NULL 469 val_469 +NULL NULL 469 val_469 +NULL NULL 469 val_469 +NULL NULL 475 val_475 +NULL NULL 477 val_477 +NULL NULL 479 val_479 +NULL NULL 481 val_481 +NULL NULL 483 val_483 +NULL NULL 485 val_485 +NULL NULL 487 val_487 +NULL NULL 489 val_489 +NULL NULL 489 val_489 +NULL NULL 489 val_489 +NULL NULL 489 val_489 +NULL NULL 491 val_491 +NULL NULL 493 val_493 +NULL NULL 495 val_495 +NULL NULL 497 val_497 +PREHOOK: query: explain +insert overwrite table smb_join_results +select /*+mapjoin(a)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key +PREHOOK: type: QUERY +POSTHOOK: query: explain +insert overwrite table smb_join_results +select /*+mapjoin(a)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key +POSTHOOK: type: QUERY +ABSTRACT SYNTAX TREE: + (TOK_QUERY (TOK_FROM (TOK_FULLOUTERJOIN (TOK_TABREF smb_bucket4_1 a) (TOK_TABREF smb_bucket4_2 b) (= (. (TOK_TABLE_OR_COL a) key) (. (TOK_TABLE_OR_COL b) key)))) (TOK_INSERT (TOK_DESTINATION (TOK_TAB smb_join_results)) (TOK_SELECT (TOK_HINTLIST (TOK_HINT TOK_MAPJOIN (TOK_HINTARGLIST a))) (TOK_SELEXPR TOK_ALLCOLREF)))) + +STAGE DEPENDENCIES: + Stage-1 is a root stage + Stage-0 depends on stages: Stage-1 + +STAGE PLANS: + Stage: Stage-1 + Map Reduce + Alias -> Map Operator Tree: + b + TableScan + alias: b + Sorted Merge Bucket Map Join Operator + condition map: + Outer Join 0 to 1 + condition expressions: + 0 {key} {value} + 1 {key} {value} + handleSkewJoin: false + keys: + 0 [Column[key]] + 1 [Column[key]] + outputColumnNames: _col0, _col1, _col2, _col3 + Position of Big Table: 1 + Select Operator + expressions: + expr: _col0 + type: int + expr: _col1 + type: string + expr: _col2 + type: int + expr: _col3 + type: string + outputColumnNames: _col0, _col1, _col2, _col3 + Select Operator + expressions: + expr: _col0 + type: int + expr: _col1 + type: string + expr: _col2 + type: int + expr: _col3 + type: string + outputColumnNames: _col0, _col1, _col2, _col3 + File Output Operator + compressed: false + GlobalTableId: 1 + 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 + name: smb_join_results + + Stage: Stage-0 + Move Operator + tables: + replace: true + 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 + name: smb_join_results + + +PREHOOK: query: insert overwrite table smb_join_results +select /*+mapjoin(a)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key +PREHOOK: type: QUERY +PREHOOK: Input: default@smb_bucket4_2 +PREHOOK: Input: default@smb_bucket4_1 +PREHOOK: Output: default@smb_join_results +POSTHOOK: query: insert overwrite table smb_join_results +select /*+mapjoin(a)*/ * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key +POSTHOOK: type: QUERY +POSTHOOK: Input: default@smb_bucket4_2 +POSTHOOK: Input: default@smb_bucket4_1 +POSTHOOK: Output: default@smb_join_results +PREHOOK: query: select * from smb_join_results order by k1 +PREHOOK: type: QUERY +PREHOOK: Input: default@smb_join_results +PREHOOK: Output: file:/Users/heyongqiang/Documents/workspace/Hive_RCFile/build/ql/scratchdir/hive_2010-03-23_17-43-20_724_8972446774229078097/10000 +POSTHOOK: query: select * from smb_join_results order by k1 +POSTHOOK: type: QUERY +POSTHOOK: Input: default@smb_join_results +POSTHOOK: Output: file:/Users/heyongqiang/Documents/workspace/Hive_RCFile/build/ql/scratchdir/hive_2010-03-23_17-43-20_724_8972446774229078097/10000 +NULL NULL 0 val_0 +NULL NULL 0 val_0 +NULL NULL 0 val_0 +NULL NULL 2 val_2 +NULL NULL 4 val_4 +NULL NULL 8 val_8 +NULL NULL 10 val_10 +NULL NULL 12 val_12 +NULL NULL 12 val_12 +NULL NULL 18 val_18 +NULL NULL 18 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+NULL NULL 411 val_411 +NULL NULL 413 val_413 +NULL NULL 413 val_413 +NULL NULL 417 val_417 +NULL NULL 417 val_417 +NULL NULL 417 val_417 +NULL NULL 419 val_419 +NULL NULL 421 val_421 +NULL NULL 427 val_427 +NULL NULL 429 val_429 +NULL NULL 429 val_429 +NULL NULL 431 val_431 +NULL NULL 431 val_431 +NULL NULL 431 val_431 +NULL NULL 435 val_435 +NULL NULL 437 val_437 +NULL NULL 439 val_439 +NULL NULL 439 val_439 +NULL NULL 443 val_443 +NULL NULL 449 val_449 +NULL NULL 453 val_453 +NULL NULL 455 val_455 +NULL NULL 457 val_457 +NULL NULL 459 val_459 +NULL NULL 459 val_459 +NULL NULL 463 val_463 +NULL NULL 463 val_463 +NULL NULL 467 val_467 +NULL NULL 469 val_469 +NULL NULL 469 val_469 +NULL NULL 469 val_469 +NULL NULL 469 val_469 +NULL NULL 469 val_469 +NULL NULL 475 val_475 +NULL NULL 477 val_477 +NULL NULL 479 val_479 +NULL NULL 481 val_481 +NULL NULL 483 val_483 +NULL NULL 485 val_485 +NULL NULL 487 val_487 +NULL NULL 489 val_489 +NULL NULL 489 val_489 +NULL NULL 489 val_489 +NULL NULL 489 val_489 +NULL NULL 491 val_491 +NULL NULL 493 val_493 +NULL NULL 495 val_495 +NULL NULL 497 val_497 +PREHOOK: query: insert overwrite table normal_join_results select * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key +PREHOOK: type: QUERY +PREHOOK: Input: default@smb_bucket4_2 +PREHOOK: Input: default@smb_bucket4_1 +PREHOOK: Output: default@normal_join_results +POSTHOOK: query: insert overwrite table normal_join_results select * from smb_bucket4_1 a full outer join smb_bucket4_2 b on a.key = b.key +POSTHOOK: type: QUERY +POSTHOOK: Input: default@smb_bucket4_2 +POSTHOOK: Input: default@smb_bucket4_1 +POSTHOOK: Output: default@normal_join_results +PREHOOK: query: select sum(hash(k1)) as k1, sum(hash(k2)) as k2, sum(hash(v1)) as v1, sum(hash(v2)) as v2 from normal_join_results +PREHOOK: type: QUERY +PREHOOK: Input: default@normal_join_results +PREHOOK: Output: file:/Users/heyongqiang/Documents/workspace/Hive_RCFile/build/ql/scratchdir/hive_2010-03-23_17-43-32_487_8597548153798727757/10000 +POSTHOOK: query: select sum(hash(k1)) as k1, sum(hash(k2)) as k2, sum(hash(v1)) as v1, sum(hash(v2)) as v2 from normal_join_results +POSTHOOK: type: QUERY +POSTHOOK: Input: default@normal_join_results +POSTHOOK: Output: file:/Users/heyongqiang/Documents/workspace/Hive_RCFile/build/ql/scratchdir/hive_2010-03-23_17-43-32_487_8597548153798727757/10000 +0 130091 0 36210398070 +PREHOOK: query: select sum(hash(k1)) as k1, sum(hash(k2)) as k2, sum(hash(v1)) as v1, sum(hash(v2)) as v2 from smb_join_results +PREHOOK: type: QUERY +PREHOOK: Input: default@smb_join_results +PREHOOK: Output: file:/Users/heyongqiang/Documents/workspace/Hive_RCFile/build/ql/scratchdir/hive_2010-03-23_17-43-38_536_6150065360796623962/10000 +POSTHOOK: query: select sum(hash(k1)) as k1, sum(hash(k2)) as k2, sum(hash(v1)) as v1, sum(hash(v2)) as v2 from smb_join_results +POSTHOOK: type: QUERY +POSTHOOK: Input: default@smb_join_results +POSTHOOK: Output: file:/Users/heyongqiang/Documents/workspace/Hive_RCFile/build/ql/scratchdir/hive_2010-03-23_17-43-38_536_6150065360796623962/10000 +0 130091 0 36210398070 +PREHOOK: query: select sum(hash(k1)) as k1, sum(hash(k2)) as k2, sum(hash(v1)) as v1, sum(hash(v2)) as v2 from smb_join_results_empty_bigtable +PREHOOK: type: QUERY +PREHOOK: Input: default@smb_join_results_empty_bigtable +PREHOOK: Output: file:/Users/heyongqiang/Documents/workspace/Hive_RCFile/build/ql/scratchdir/hive_2010-03-23_17-43-42_746_6078097413289235679/10000 +POSTHOOK: query: select sum(hash(k1)) as k1, sum(hash(k2)) as k2, sum(hash(v1)) as v1, sum(hash(v2)) as v2 from smb_join_results_empty_bigtable +POSTHOOK: type: QUERY +POSTHOOK: Input: default@smb_join_results_empty_bigtable +POSTHOOK: Output: file:/Users/heyongqiang/Documents/workspace/Hive_RCFile/build/ql/scratchdir/hive_2010-03-23_17-43-42_746_6078097413289235679/10000 +0 130091 0 36210398070 +PREHOOK: query: drop table smb_join_results +PREHOOK: type: DROPTABLE +POSTHOOK: query: drop table smb_join_results +POSTHOOK: type: DROPTABLE +POSTHOOK: Output: default@smb_join_results +PREHOOK: query: drop table smb_join_results_empty_bigtable +PREHOOK: type: DROPTABLE +POSTHOOK: query: drop table smb_join_results_empty_bigtable +POSTHOOK: type: DROPTABLE +POSTHOOK: Output: default@smb_join_results_empty_bigtable +PREHOOK: query: drop table normal_join_results +PREHOOK: type: DROPTABLE +POSTHOOK: query: drop table normal_join_results +POSTHOOK: type: DROPTABLE +POSTHOOK: Output: default@normal_join_results +PREHOOK: query: drop table smb_bucket4_1 +PREHOOK: type: DROPTABLE +POSTHOOK: query: drop table smb_bucket4_1 +POSTHOOK: type: DROPTABLE +POSTHOOK: Output: default@smb_bucket4_1 +PREHOOK: query: drop table smb_bucket4_2 +PREHOOK: type: DROPTABLE +POSTHOOK: query: drop table smb_bucket4_2 +POSTHOOK: type: DROPTABLE +POSTHOOK: Output: default@smb_bucket4_2