[jira] [Commented] (HBASE-4491) HBase Locality Checker
[ 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HBASE-4491) HBase Locality Checker
[ 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HBASE-4491) HBase Locality Checker
[ 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira
