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https://issues.apache.org/jira/browse/HIVE-3104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Steven Wong updated HIVE-3104:
------------------------------
Description:
Predicate pushdown seems to work for single-insert queries using LATERAL VIEW.
It also seems to work for multi-insert queries *not* using LATERAL VIEW.
However, it doesn't work for multi-insert queries using LATERAL VIEW: It errors
out right away with 'FAILED: SemanticException [Error 10041]: No partition
predicate found for Alias "test" Table "test"'.
Here are some examples. In the below examples, I make use of the fact that a
query with no partition filtering when run under "hive.mapred.mode=strict"
fails.
--Table creation and population
DROP TABLE IF EXISTS test;
CREATE TABLE test (col1 array<int>, col2 int) PARTITIONED BY (part_col int);
INSERT OVERWRITE TABLE test PARTITION (part_col=1) SELECT array(1,2), count(*)
FROM test;
INSERT OVERWRITE TABLE test PARTITION (part_col=2) SELECT array(2,4,6),
count(*) FROM test;
-- Query 1
-- This succeeds (using LATERAL VIEW with single insert)
set hive.mapred.mode=strict;
FROM test
LATERAL VIEW explode(col1) tmp AS exp_col1
INSERT OVERWRITE DIRECTORY '/test/1'
SELECT exp_col1
WHERE (part_col=2);
-- Query 2
-- This succeeds (NOT using LATERAL VIEW with multi-insert)
set hive.mapred.mode=strict;
FROM test
INSERT OVERWRITE DIRECTORY '/test/1'
SELECT col1
WHERE (part_col=2)
INSERT OVERWRITE DIRECTORY '/test/2'
SELECT col1
WHERE (part_col=2);
-- Query 3
-- This fails (using LATERAL VIEW with multi-insert)
set hive.mapred.mode=strict;
FROM test
LATERAL VIEW explode(col1) tmp AS exp_col1
INSERT OVERWRITE DIRECTORY '/test/1'
SELECT exp_col1
WHERE (part_col=2)
INSERT OVERWRITE DIRECTORY '/test/2'
SELECT exp_col1
WHERE (part_col=2);
was:
Predicate pushdown seems to work for single-insert queries using LATERAL VIEW.
It also seems to work for multi-insert queries *not* using LATERAL VIEW.
However, it doesn't work for multi-insert queries using LATERAL VIEW.
Here are some examples. In the below examples, I make use of the fact that a
query with no partition filtering when run under "hive.mapred.mode=strict"
fails.
--Table creation and population
DROP TABLE IF EXISTS test;
CREATE TABLE test (col1 array<int>, col2 int) PARTITIONED BY (part_col int);
INSERT OVERWRITE TABLE test PARTITION (part_col=1) SELECT array(1,2), count(*)
FROM test;
INSERT OVERWRITE TABLE test PARTITION (part_col=2) SELECT array(2,4,6),
count(*) FROM test;
-- Query 1
-- This succeeds (using LATERAL VIEW with single insert)
set hive.mapred.mode=strict;
FROM test
LATERAL VIEW explode(col1) tmp AS exp_col1
INSERT OVERWRITE DIRECTORY '/test/1'
SELECT exp_col1
WHERE (part_col=2);
-- Query 2
-- This succeeds (NOT using LATERAL VIEW with multi-insert)
set hive.mapred.mode=strict;
FROM test
INSERT OVERWRITE DIRECTORY '/test/1'
SELECT col1
WHERE (part_col=2)
INSERT OVERWRITE DIRECTORY '/test/2'
SELECT col1
WHERE (part_col=2);
-- Query 3
-- This fails (using LATERAL VIEW with multi-insert)
set hive.mapred.mode=strict;
FROM test
LATERAL VIEW explode(col1) tmp AS exp_col1
INSERT OVERWRITE DIRECTORY '/test/1'
SELECT exp_col1
WHERE (part_col=2)
INSERT OVERWRITE DIRECTORY '/test/2'
SELECT exp_col1
WHERE (part_col=2);
> Predicate pushdown doesn't work with multi-insert statements using LATERAL
> VIEW
> -------------------------------------------------------------------------------
>
> Key: HIVE-3104
> URL: https://issues.apache.org/jira/browse/HIVE-3104
> Project: Hive
> Issue Type: Bug
> Components: CLI
> Affects Versions: 0.9.0
> Environment: Apache Hive 0.9.0, Apache Hadoop 0.20.205.0
> Reporter: Mark Grover
> Assignee: Xuefu Zhang
>
> Predicate pushdown seems to work for single-insert queries using LATERAL
> VIEW. It also seems to work for multi-insert queries *not* using LATERAL
> VIEW. However, it doesn't work for multi-insert queries using LATERAL VIEW:
> It errors out right away with 'FAILED: SemanticException [Error 10041]: No
> partition predicate found for Alias "test" Table "test"'.
> Here are some examples. In the below examples, I make use of the fact that a
> query with no partition filtering when run under "hive.mapred.mode=strict"
> fails.
> --Table creation and population
> DROP TABLE IF EXISTS test;
> CREATE TABLE test (col1 array<int>, col2 int) PARTITIONED BY (part_col int);
> INSERT OVERWRITE TABLE test PARTITION (part_col=1) SELECT array(1,2),
> count(*) FROM test;
> INSERT OVERWRITE TABLE test PARTITION (part_col=2) SELECT array(2,4,6),
> count(*) FROM test;
> -- Query 1
> -- This succeeds (using LATERAL VIEW with single insert)
> set hive.mapred.mode=strict;
> FROM test
> LATERAL VIEW explode(col1) tmp AS exp_col1
> INSERT OVERWRITE DIRECTORY '/test/1'
> SELECT exp_col1
> WHERE (part_col=2);
> -- Query 2
> -- This succeeds (NOT using LATERAL VIEW with multi-insert)
> set hive.mapred.mode=strict;
> FROM test
> INSERT OVERWRITE DIRECTORY '/test/1'
> SELECT col1
> WHERE (part_col=2)
> INSERT OVERWRITE DIRECTORY '/test/2'
> SELECT col1
> WHERE (part_col=2);
> -- Query 3
> -- This fails (using LATERAL VIEW with multi-insert)
> set hive.mapred.mode=strict;
> FROM test
> LATERAL VIEW explode(col1) tmp AS exp_col1
> INSERT OVERWRITE DIRECTORY '/test/1'
> SELECT exp_col1
> WHERE (part_col=2)
> INSERT OVERWRITE DIRECTORY '/test/2'
> SELECT exp_col1
> WHERE (part_col=2);
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