Tim Robertson commented on HBASE-12596:

Do any of the original committers recall if there was a technical reason why 
this could not be applied to 1.0.0?
I'm about to try and produce a patched implementation for a running 1.0 (CDH 
5.4.10) installation but if someone knows this is doomed it would be nice to 

> bulkload needs to follow locality
> ---------------------------------
>                 Key: HBASE-12596
>                 URL: https://issues.apache.org/jira/browse/HBASE-12596
>             Project: HBase
>          Issue Type: Improvement
>          Components: HFile, regionserver
>    Affects Versions: 0.98.8
>         Environment: hadoop-2.3.0, hbase-0.98.8, jdk1.7
>            Reporter: Victor Xu
>            Assignee: Victor Xu
>             Fix For: 2.0.0, 0.98.14, 1.3.0
>         Attachments: HBASE-12596-0.98-v1.patch, HBASE-12596-0.98-v2.patch, 
> HBASE-12596-0.98-v3.patch, HBASE-12596-0.98-v4.patch, 
> HBASE-12596-0.98-v5.patch, HBASE-12596-0.98-v6.patch, 
> HBASE-12596-branch-1-v1.patch, HBASE-12596-branch-1-v2.patch, 
> HBASE-12596-master-v1.patch, HBASE-12596-master-v2.patch, 
> HBASE-12596-master-v3.patch, HBASE-12596-master-v4.patch, 
> HBASE-12596-master-v5.patch, HBASE-12596-master-v6.patch, HBASE-12596.patch
> Normally, we have 2 steps to perform a bulkload: 1. use a job to write HFiles 
> to be loaded; 2. Move these HFiles to the right hdfs directory. However, the 
> locality could be loss during the first step. Why not just write the HFiles 
> directly into the right place? We can do this easily because 
> StoreFile.WriterBuilder has the "withFavoredNodes" method, and we just need 
> to call it in HFileOutputFormat's getNewWriter().
> This feature is enabled by default, and we could use 
> 'hbase.bulkload.locality.sensitive.enabled=false' to disable it.

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