-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/29800/
-----------------------------------------------------------
Review request for hive.
Bugs: HIVE-9341
https://issues.apache.org/jira/browse/HIVE-9341
Repository: hive-git
Description
-------
Currently, PTF disables CP optimization, which can make a huge burden. For
example,
{noformat}
select p_mfgr, p_name, p_size,
rank() over (partition by p_mfgr order by p_name) as r,
dense_rank() over (partition by p_mfgr order by p_name) as dr,
sum(p_retailprice) over (partition by p_mfgr order by p_name rows between
unbounded preceding and current row) as s1
from noop(on part
partition by p_mfgr
order by p_name
);
STAGE PLANS:
Stage: Stage-1
Map Reduce
Map Operator Tree:
TableScan
alias: part
Statistics: Num rows: 26 Data size: 3147 Basic stats: COMPLETE
Column stats: NONE
Reduce Output Operator
key expressions: p_mfgr (type: string), p_name (type: string)
sort order: ++
Map-reduce partition columns: p_mfgr (type: string)
Statistics: Num rows: 26 Data size: 3147 Basic stats: COMPLETE
Column stats: NONE
value expressions: p_partkey (type: int), p_name (type: string),
p_mfgr (type: string), p_brand (type: string), p_type (type: string), p_size
(type: int), p_container (type: string), p_retailprice (type: double),
p_comment (type: string), BLOCK__OFFSET__INSIDE__FILE (type: bigint),
INPUT__FILE__NAME (type: string), ROW__ID (type:
struct<transactionid:bigint,bucketid:int,rowid:bigint>)
...
{noformat}
There should be a generic way to discern referenced columns but before that, we
know CP can be safely applied to noop functions.
Diffs
-----
ql/src/java/org/apache/hadoop/hive/ql/optimizer/ColumnPrunerProcFactory.java
afd1738
ql/src/java/org/apache/hadoop/hive/ql/ppd/PredicatePushDown.java ee7328e
Diff: https://reviews.apache.org/r/29800/diff/
Testing
-------
Thanks,
Navis Ryu
