hawq-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From linwen <...@git.apache.org>
Subject [GitHub] incubator-hawq pull request #1354: HAWQ-1606. Implement Deciding to Create B...
Date Sun, 15 Apr 2018 11:36:53 GMT
GitHub user linwen opened a pull request:

    https://github.com/apache/incubator-hawq/pull/1354

    HAWQ-1606. Implement Deciding to Create Bloom Filter During Query Plan And Create Bloom
filter For Inner Table

    This commit implements deciding to create Bloom Filter during query plan and create Bloom
filter for inner table, including:
    
    1. Introduce a GUC, hawq_hashjoin_bloomfilter_max_memory_size, controls the maximum memory
size for one bloom filter in hash join.
    2. Introduce a GUC, hawq_hashjoin_bloomfilter_ratio, when the ratio of (the estimated
number of hash join tuples)/(number of tuples of outer table) is lower than the GUC, then
Bloom filter can be used in hash join.
    3. Decide whether to create Bloom filter during query plan phase.
    4. During query execution phase, create Bloom filter structure and poputlate it for tuples
from inner table.
    
    Please review it, thanks!

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/linwen/incubator-hawq hawq-1606

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-hawq/pull/1354.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1354
    
----
commit 11b20b51026419cf91c71cabb9c17e0e467399f7
Author: Wen Lin <wlin@...>
Date:   2018-04-15T11:29:19Z

    HAWQ-1606. This commit implements deciding to create Bloom Filter during query plan and
create Bloom filter for inner table, including:
    
    1. Introduce a GUC, hawq_hashjoin_bloomfilter_max_memory_size, controls the maximum memory
size for one bloom filter in hash join.
    2. Introduce a GUC, hawq_hashjoin_bloomfilter_ratio, when the ratio of (the estimated
number of hash join tuples)/(number of tuples of outer table) is lower than the GUC, then
Bloom filter can be used in hash join.
    3. Decide whether to create Bloom filter during query plan phase.
    4. During query execution phase, create Bloom filter structure and poputlate it for tuples
from inner table.

----


---

Mime
View raw message