[jira] [Updated] (HBASE-14520) Optimize the number of calls for tags creation in bulk load

["Bhupendra Kumar Jain (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-14520?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bhupendra Kumar Jain updated HBASE-14520:
-----------------------------------------
    Summary: Optimize the number of calls for tags creation in bulk load  (was: Optimnize the number of calls for tags creation in bulk load)

> Optimize the number of calls for tags creation in bulk load
> -----------------------------------------------------------
>
>                 Key: HBASE-14520
>                 URL: https://issues.apache.org/jira/browse/HBASE-14520
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Bhupendra Kumar Jain
>            Assignee: Bhupendra Kumar Jain
>
> At present, ttl and Visibility expr is one per tsv line i.e. the values and the tags remain same for all the columns present in that line. As per the code, List of tags are created for each cell, Instead of creating new tags for each cell, tags created once for the line can be reused by other cells.  
> Assume 1Million rows and 1000 columns. Currently tags creation will happen for 1M * 1000 times. If reuse the tags, the tags creation can reduce to 1M times. (i.e. one per tsv line). 
> This is applicable in both TsvImporterMapper and TextSortReducer logic. 



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