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https://issues.apache.org/jira/browse/TAJO-835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14027470#comment-14027470
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Jihoon Son commented on TAJO-835:
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Hyunsik, thanks for your comment.
Here are my answers.
1) I'd like to complete this feature before 0.9.0 release, but can't assure.
I'll change the fix version as 1.0.
2) Currently, I don't have any plan to implement a new index structure. In this
ticket, I primarily intent to use index for query execution.
3) Basically, I agree with you. To consider other storages which provide
indexes internally, however, it is required to get meta information from the
underlying file system. As you guess, the meta information of file systems
include the index support.
In my opinion, we can devise the unified interface of the file system later
when we start to support other storages. As I said above, it would be better to
consider supporting index for query execution in this ticket.
How do you think about it?
> (Umbrella) Index support
> ------------------------
>
> Key: TAJO-835
> URL: https://issues.apache.org/jira/browse/TAJO-835
> Project: Tajo
> Issue Type: New Feature
> Reporter: Jihoon Son
> Priority: Minor
> Fix For: 0.9.0
>
>
> Indexes are widely used to reduce I/O overhead in databases.
> In Tajo, some index structures such as BST are already implemented, but their
> usages are very limited. Currently, only BST is used for range partition.
> The better utilization of indexes can improve the query performance.
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