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https://issues.apache.org/jira/browse/CARBONDATA-2204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jacky Li resolved CARBONDATA-2204.
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Resolution: Fixed
Fix Version/s: 1.3.1
> Access tablestatus file too many times during query
> ---------------------------------------------------
>
> Key: CARBONDATA-2204
> URL: https://issues.apache.org/jira/browse/CARBONDATA-2204
> Project: CarbonData
> Issue Type: Improvement
> Components: data-query
> Affects Versions: 1.3.0
> Reporter: xuchuanyin
> Priority: Major
> Fix For: 1.3.1
>
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> * Problems
> Currently in carbondata, a single query will access tablestatus file 7 times,
> which will definitely slow down the query performance especially when this
> file is in remote cluster since reading this file is purely client side
> operation.
>
> * Steps to reproduce
> 1. Add logger in `AtomicFileOperationsImpl.openForRead` and printout the file
> name to read.
> 2. Run a query on carbondata table. Here I ran
> `TestLoadDataGeneral.test("test data loading CSV file without extension
> name")`.
> 3. Observe the output log and search the keyword 'tablestatus'.
>
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