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https://issues.apache.org/jira/browse/TAJO-1055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyunsik Choi resolved TAJO-1055.
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Resolution: Fixed
committed to the block_iteration branch.
> 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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