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Posted to issues@carbondata.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2016/09/16 19:24:21 UTC
[jira] [Commented] (CARBONDATA-246) compaction is wrong in case if
last segment is not assigned to an executor.
[ https://issues.apache.org/jira/browse/CARBONDATA-246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15497154#comment-15497154 ]
ASF GitHub Bot commented on CARBONDATA-246:
-------------------------------------------
GitHub user ravikiran23 opened a pull request:
https://github.com/apache/incubator-carbondata/pull/161
[CARBONDATA-246] compaction is wrong in case if last segment is not assigned to an executor.
PROBLEM:
if during compaction of 4 loads, for any executor if only first 3 loads task is assigned then the col cardinality calculation based on the last segment info will become wrong.
in this case the cardinality will go wrong for that executor.
Solution :
Pass the segment properties info from the driver using the last segment.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ravikiran23/incubator-carbondata blockDistributionProblem
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-carbondata/pull/161.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 #161
----
commit 9a0dbc0df8ae091dff0d02133295ce2344cf6734
Author: ravikiran <ra...@gmail.com>
Date: 2016-09-16T19:16:24Z
if during compaction of 4 loads, for any executor if only first 3 loads task is assigned then the col cardinality calculation based on the last segment info will become wrong.
in this case the cardinality will go wrong for that executor.
----
> compaction is wrong in case if last segment is not assigned to an executor.
> ----------------------------------------------------------------------------
>
> Key: CARBONDATA-246
> URL: https://issues.apache.org/jira/browse/CARBONDATA-246
> Project: CarbonData
> Issue Type: Bug
> Reporter: ravikiran
>
> if during compaction of 4 loads, for any executor if only first 3 loads task is assigned then the col cardinality calculation based on the last segment info will become wrong.
> in this case the cardinality will go wrong for that executor.
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