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https://issues.apache.org/jira/browse/HBASE-9045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13809492#comment-13809492
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Anoop Sam John commented on HBASE-9045:
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bq.Can do it based on configuration?
IMO deciding such a conf is hard. Tags might be internally used for different
use cases later. (Already there are some plans in other jiras) For a user to
know all these and deciding such a conf will be hard right? That is why I am
thinking that tag by tag compression will be safe. What do you say?
Will correct the javadoc. I missed that in this patch. Thanks for the finding.
bq.if (in.hasArray())
That is the recommendation from javadoc for using array()
{quote}
Invoke the hasArray method before invoking this
method in order to ensure that this buffer has an accessible backing
array.
{quote}
> Support Dictionary based Tag compression in HFiles
> --------------------------------------------------
>
> Key: HBASE-9045
> URL: https://issues.apache.org/jira/browse/HBASE-9045
> Project: HBase
> Issue Type: Sub-task
> Affects Versions: 0.98.0
> Reporter: Anoop Sam John
> Assignee: Anoop Sam John
> Fix For: 0.98.0
>
> Attachments: HBASE-9045.patch, HBASE-9045_V2.patch
>
>
> Along with the DataBlockEncoding algorithms, Dictionary based Tag compression
> can be done
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