[jira] [Commented] (HBASE-4491) HBase Locality Checker

2012-02-23 Thread Anoop Sam John (Commented) (JIRA)

[ 
https://issues.apache.org/jira/browse/HBASE-4491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13214617#comment-13214617
 ] 

Anoop Sam John commented on HBASE-4491:
---

@Liyin: Looks very useful. Any update on this new feature

> HBase Locality Checker
> --
>
> Key: HBASE-4491
> URL: https://issues.apache.org/jira/browse/HBASE-4491
> Project: HBase
>  Issue Type: New Feature
>Reporter: Liyin Tang
>Assignee: Liyin Tang
>
> If we run data node and region server in the same physical machine, region 
> server will be benefit if the store files for its serving regions have a 
> local replica in the data node process.
> So for each regions, there exists a best locality region server which has 
> most local blocks for this region.
> The HBase Locality Checker will show how many regions is running on its best 
> locality region server. 
> The higher the number is, the more performance benefits HBase can get from 
> data locality.
> Also there would be a followup task to use these region locality information 
> for region assignment. Assignment manager will prefer assign regions to its 
> best locality region server.

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[jira] [Commented] (HBASE-4491) HBase Locality Checker

2011-09-26 Thread Ted Yu (Commented) (JIRA)

[ 
https://issues.apache.org/jira/browse/HBASE-4491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13115017#comment-13115017
 ] 

Ted Yu commented on HBASE-4491:
---

@Liyin:
Is the followup task covered by HBASE-4191 ?

Good utility. Looking forward to it.

> HBase Locality Checker
> --
>
> Key: HBASE-4491
> URL: https://issues.apache.org/jira/browse/HBASE-4491
> Project: HBase
>  Issue Type: New Feature
>Reporter: Liyin Tang
>Assignee: Liyin Tang
>
> If we run data node and region server in the same physical machine, region 
> server will be benefit if the store files for its serving regions have a 
> local replica in the data node process.
> So for each regions, there exists a best locality region server which has 
> most local blocks for this region.
> The HBase Locality Checker will show how many regions is running on its best 
> locality region server. 
> The higher the number is, the more performance benefits HBase can get from 
> data locality.
> Also there would be a followup task to use these region locality information 
> for region assignment. Assignment manager will prefer assign regions to its 
> best locality region server.

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[jira] [Commented] (HBASE-4491) HBase Locality Checker

2011-09-26 Thread Liyin Tang (Commented) (JIRA)

[ 
https://issues.apache.org/jira/browse/HBASE-4491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13115025#comment-13115025
 ] 

Liyin Tang commented on HBASE-4491:
---

@Ted: Yes, it looks like be covered HBASE-4191. I can follow up for HBASE-4191.

> HBase Locality Checker
> --
>
> Key: HBASE-4491
> URL: https://issues.apache.org/jira/browse/HBASE-4491
> Project: HBase
>  Issue Type: New Feature
>Reporter: Liyin Tang
>Assignee: Liyin Tang
>
> If we run data node and region server in the same physical machine, region 
> server will be benefit if the store files for its serving regions have a 
> local replica in the data node process.
> So for each regions, there exists a best locality region server which has 
> most local blocks for this region.
> The HBase Locality Checker will show how many regions is running on its best 
> locality region server. 
> The higher the number is, the more performance benefits HBase can get from 
> data locality.
> Also there would be a followup task to use these region locality information 
> for region assignment. Assignment manager will prefer assign regions to its 
> best locality region server.

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