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Posted to issues@drill.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2015/12/11 22:13:46 UTC
[jira] [Commented] (DRILL-4152) Add additional logging and metrics
to the Parquet reader
[ https://issues.apache.org/jira/browse/DRILL-4152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15053566#comment-15053566 ]
ASF GitHub Bot commented on DRILL-4152:
---------------------------------------
GitHub user parthchandra opened a pull request:
https://github.com/apache/drill/pull/298
DRILL-4152: Add trace logging to Parquet reader for performance tuning.
Added trace level logging to track time taken by the Parquet reader.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/parthchandra/incubator-drill DRILL-4152
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/298.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 #298
----
commit edb772e4e7c1a1af325c2ae3da659dbf0b0c26a4
Author: Parth Chandra <pa...@apache.org>
Date: 2015-12-03T22:32:30Z
DRILL-4152: Add trace logging to Parquet reader for performance tuning.
----
> Add additional logging and metrics to the Parquet reader
> --------------------------------------------------------
>
> Key: DRILL-4152
> URL: https://issues.apache.org/jira/browse/DRILL-4152
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - Parquet
> Reporter: Parth Chandra
> Assignee: Parth Chandra
>
> In some cases, we see the Parquet reader as the bottleneck in reading from the file system. RWSpeedTest is able to read 10x faster than the Parquet reader so reading from disk is not the issue. This issue is to add more instrumentation to the Parquet reader so speed bottlenecks can be better diagnosed.
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