GitHub user blrunner opened a pull request:
https://github.com/apache/tajo/pull/1024
TAJO-2069: Implement finding the total size of all objects in a bucket with
AWS SDK.
See following issues
* https://issues.apache.org/jira/browse/TAJO-2023
* https://issues.apache.org/jira/browse/TAJO-2069
When creating external table, Tajo calls ``FileSystem::getContentSummary``
to get the table volume in ``TableSpace::createTable``. This API will call S3
client api to loop recursively all sub directories of the specified path. It
will become a huge bottleneck with a large partitioned table. We need to
improve it for AWS Tajo users. Here is my benchmark results as follows.
# Configuration
* EC2 instance type : c3.xlarge
* Tajo version : 0.12.0-SNAPSHOT
* Cluster: 1 master, 1 worker
# Contents summary time
#of directories | S3AFileSystem | S3FileTableSpace | Improvement
-------------------|----------------------|--------------------------|-------------------
5 | 1056.5 ms | 136.2 ms | 7.8x
365 | 56549 ms | 153.8 ms | 367.7x
730 | 113007.5 ms | 193.2 ms | 585x
1095 | 168567 ms | 215.7 ms | 781.5x
1460 | 228129.5 ms | 234.2 ms | 974.1x
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/blrunner/tajo TAJO-2069
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/tajo/pull/1024.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 #1024
----
commit 6e4ddd9728bde9781e8884ae88596ca732d7cc40
Author: JaeHwa Jung <[email protected]>
Date: 2016-05-16T07:38:09Z
TAJO-2069: Implement finding the total size of all objects in a bucket with
AWS SDK.
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