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https://issues.apache.org/jira/browse/TAJO-1713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14641653#comment-14641653
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ASF GitHub Bot commented on TAJO-1713:
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GitHub user jihoonson opened a pull request:
https://github.com/apache/tajo/pull/654
TAJO-1713: Change the type of edge cache in JoinGraphContext from HashMap
to LRUMap
I've also cleared variables which are unnecessary after join optimization.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jihoonson/tajo-2 TAJO-1713
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/tajo/pull/654.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 #654
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commit 587ecbbc4d1e099c41abbe59908263140feeced8
Author: Jihoon Son <[email protected]>
Date: 2015-07-25T15:03:01Z
TAJO-1713
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> Change the type of edge cache in JoinGraphContext from HashMap to LRUMap
> ------------------------------------------------------------------------
>
> Key: TAJO-1713
> URL: https://issues.apache.org/jira/browse/TAJO-1713
> Project: Tajo
> Issue Type: Task
> Components: Planner/Optimizer
> Reporter: Jihoon Son
> Fix For: 0.11.0
>
>
> Since the current implementation using HashMap involves the potential OOM
> with a lot of join tables. We should prevent it.
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