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https://issues.apache.org/jira/browse/CARBONDATA-1291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16093570#comment-16093570
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kumar vishal commented on CARBONDATA-1291:
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When number of blocks are high, driver will check availability for deleted
delta file for each block. As file list operation is quite expensive,it is
hitting the query performance.
To avoid this driver can check whether table is updated and if not then no need
to check for deleted files
> CarbonData query performace improvement when number of carbon blocks are high
> -----------------------------------------------------------------------------
>
> Key: CARBONDATA-1291
> URL: https://issues.apache.org/jira/browse/CARBONDATA-1291
> Project: CarbonData
> Issue Type: Bug
> Reporter: kumar vishal
> Assignee: kumar vishal
>
> When number of carbon blocks are high query performance is bad
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