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https://issues.apache.org/jira/browse/TAJO-1218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14230822#comment-14230822
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Jihoon Son commented on TAJO-1218:
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Hi [~hyunsik].
It is a good idea.
I think that we also need to recover blacklisted nodes when they become normal.
> Implement straggler detector and the block list
> -----------------------------------------------
>
> Key: TAJO-1218
> URL: https://issues.apache.org/jira/browse/TAJO-1218
> Project: Tajo
> Issue Type: Improvement
> Reporter: Hyunsik Choi
> Labels: failure-handling, fault-tolerance
>
> A straggler is a machine that takes an unusually longer time to complete
> tasks than other machines do. Straggler is usual in large-scale distributed
> systems. Earlier straggler detection and handling can significantly reduce
> query response times. So, we need to add the straggler detector. Detected
> stragglers should be added to the black list, and they should not used for
> processing.
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