[jira] [Commented] (HBASE-21006) Balancer - data locality drops 30-40% across all nodes after every cluster-wide rolling restart, not migrating regions back to original RegionServers?
[ https://issues.apache.org/jira/browse/HBASE-21006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16568720#comment-16568720 ] Hari Sekhon commented on HBASE-21006: - I will do follow up analysis of this on Monday as it's late here in London. I saw HBASE-18164 but I didn't think it quite fitted, and I didn't see HBASE-18036. If it's covered by that one then I'll close this as a duplicate after we review it next week. > Balancer - data locality drops 30-40% across all nodes after every > cluster-wide rolling restart, not migrating regions back to original > RegionServers? > -- > > Key: HBASE-21006 > URL: https://issues.apache.org/jira/browse/HBASE-21006 > Project: HBase > Issue Type: Improvement > Components: Balancer >Affects Versions: 1.1.2 > Environment: HDP 2.6 >Reporter: Hari Sekhon >Priority: Major > > After doing rolling restarts of my HBase cluster the data locality drops by > 30-40% every time which implies the stochastic balancer is not optimizing for > data locality enough, at least not under the circumstance of rolling > restarts, and that it must not be balancing the regions back to their > original RegionServers. > The stochastic balancer is supposed to take data locality in to account but > if this is the case, surely it should move regions back to their original > RegionServers and data locality should return back to around where it was, > not drop by 30-40% percent every time I need to do some tuning and a rolling > restart. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-21006) Balancer - data locality drops 30-40% across all nodes after every cluster-wide rolling restart, not migrating regions back to original RegionServers?
[ https://issues.apache.org/jira/browse/HBASE-21006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16568706#comment-16568706 ] Josh Elser commented on HBASE-21006: [~harisekhon], are you planning to do analysis of your issue? It seems like you're just dumping a report here which helps no one. HBASE-18036 is pretty much what you're already describing, so I'm apt to close this as invalid unless you have more information to share about your specific situation. > Balancer - data locality drops 30-40% across all nodes after every > cluster-wide rolling restart, not migrating regions back to original > RegionServers? > -- > > Key: HBASE-21006 > URL: https://issues.apache.org/jira/browse/HBASE-21006 > Project: HBase > Issue Type: Improvement > Components: Balancer >Affects Versions: 1.1.2 > Environment: HDP 2.6 >Reporter: Hari Sekhon >Priority: Major > > After doing rolling restarts of my HBase cluster the data locality drops by > 30-40% every time which implies the stochastic balancer is not optimizing for > data locality enough, at least not under the circumstance of rolling > restarts, and that it must not be balancing the regions back to their > original RegionServers. > The stochastic balancer is supposed to take data locality in to account but > if this is the case, surely it should move regions back to their original > RegionServers and data locality should return back to around where it was, > not drop by 30-40% percent every time I need to do some tuning and a rolling > restart. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-21006) Balancer - data locality drops 30-40% across all nodes after every cluster-wide rolling restart, not migrating regions back to original RegionServers?
[ https://issues.apache.org/jira/browse/HBASE-21006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16568697#comment-16568697 ] Hari Sekhon commented on HBASE-21006: - I have, and pointed them to this Jira - that way Google can do its job in case anyone else is wondering why their data locality is destroyed after every rolling restart. > Balancer - data locality drops 30-40% across all nodes after every > cluster-wide rolling restart, not migrating regions back to original > RegionServers? > -- > > Key: HBASE-21006 > URL: https://issues.apache.org/jira/browse/HBASE-21006 > Project: HBase > Issue Type: Improvement > Components: Balancer >Affects Versions: 1.1.2 > Environment: HDP 2.6 >Reporter: Hari Sekhon >Priority: Major > > After doing rolling restarts of my HBase cluster the data locality drops by > 30-40% every time which implies the stochastic balancer is not optimizing for > data locality enough, at least not under the circumstance of rolling > restarts, and that it must not be balancing the regions back to their > original RegionServers. > The stochastic balancer is supposed to take data locality in to account but > if this is the case, surely it should move regions back to their original > RegionServers and data locality should return back to around where it was, > not drop by 30-40% percent every time I need to do some tuning and a rolling > restart. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Commented] (HBASE-21006) Balancer - data locality drops 30-40% across all nodes after every cluster-wide rolling restart, not migrating regions back to original RegionServers?
[ https://issues.apache.org/jira/browse/HBASE-21006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16568492#comment-16568492 ] Josh Elser commented on HBASE-21006: [~harisekhon], have you raised this internally with Hortonworks? > Balancer - data locality drops 30-40% across all nodes after every > cluster-wide rolling restart, not migrating regions back to original > RegionServers? > -- > > Key: HBASE-21006 > URL: https://issues.apache.org/jira/browse/HBASE-21006 > Project: HBase > Issue Type: Improvement > Components: Balancer >Affects Versions: 1.1.2 > Environment: HDP 2.6 >Reporter: Hari Sekhon >Priority: Major > > After doing rolling restarts of my HBase cluster the data locality drops by > 30-40% every time which implies the stochastic balancer is not optimizing for > data locality enough, at least not under the circumstance of rolling > restarts, and that it must not be balancing the regions back to their > original RegionServers. > The stochastic balancer is supposed to take data locality in to account but > if this is the case, surely it should move regions back to their original > RegionServers and data locality should return back to around where it was, > not drop by 30-40% percent every time I need to do some tuning and a rolling > restart. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
