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https://issues.apache.org/jira/browse/TAJO-1055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14141325#comment-14141325
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ASF GitHub Bot commented on TAJO-1055:
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GitHub user hyunsik opened a pull request:
https://github.com/apache/tajo/pull/150
TAJO-1055: ExecutorPreCompiler does not cache correctly compiled TupleCo...
...mparators.
In addition, I fixed the potential thread unsafety of BaseTupleComparator.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hyunsik/tajo TAJO-1055
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/tajo/pull/150.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 #150
----
commit 76b4f890f259c1a68150438aba491105f977f62d
Author: Hyunsik Choi <[email protected]>
Date: 2014-09-19T21:16:52Z
TAJO-1055: ExecutorPreCompiler does not cache correctly compiled
TupleComparators.
----
> ExecutorPreCompiler does not cache correctly compiled TupleComparators.
> -----------------------------------------------------------------------
>
> Key: TAJO-1055
> URL: https://issues.apache.org/jira/browse/TAJO-1055
> Project: Tajo
> Issue Type: Bug
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Priority: Minor
> Labels: block_iteration
> Fix For: block_iteration
>
>
> ExecutorPreCompiler compiles and caches TupleComparator in CompilationContext
> for sort operations. But, the current implementation misuses hash key, so it
> tries to compile TupleComparator for each sort operation. As a result, it
> causes concurrency problems.
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