[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] stack updated HBASE-13376: -- Fix Version/s: 1.2.0 > Improvements to Stochastic load balancer > > > Key: HBASE-13376 > URL: https://issues.apache.org/jira/browse/HBASE-13376 > Project: HBase > Issue Type: Improvement > Components: Balancer >Affects Versions: 1.0.0, 0.98.12 >Reporter: Vandana Ayyalasomayajula >Assignee: Vandana Ayyalasomayajula >Priority: Minor > Fix For: 2.0.0, 1.2.0, 1.3.0 > > Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, > HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.98_v2.patch, > HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, > HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, > HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_5_branch-1.patch, > HBASE-13376_6_branch-1.patch, HBASE-13376_98.patch, > HBASE-13376_branch-1.patch, HBASE-13376_v3_0.98.patch, > HBASE-13376_v4_0.98.patch > > > There are two things this jira tries to address: > 1. The locality picker in the stochastic balancer does not pick regions with > least locality as candidates for swap/move. So when any user configures > locality cost in the configs, the balancer does not always seems to move > regions with bad locality. > 2. When a cluster has equal number of loaded regions, it always picks the > first one. It should pick a random region on one of the equally loaded > servers. This improves a chance of finding a good candidate, when load picker > is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Andrew Purtell updated HBASE-13376: --- Fix Version/s: (was: 0.98.14) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Fix For: 2.0.0, 1.3.0 Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.98_v2.patch, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_5_branch-1.patch, HBASE-13376_6_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch, HBASE-13376_v3_0.98.patch, HBASE-13376_v4_0.98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Resolution: Fixed Fix Version/s: 0.98.14 Status: Resolved (was: Patch Available) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Fix For: 2.0.0, 1.3.0, 0.98.14 Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.98_v2.patch, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_5_branch-1.patch, HBASE-13376_6_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch, HBASE-13376_v3_0.98.patch, HBASE-13376_v4_0.98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_v4_0.98.patch Changed the wording and method names. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Fix For: 2.0.0, 1.3.0 Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.98_v2.patch, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_5_branch-1.patch, HBASE-13376_6_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch, HBASE-13376_v3_0.98.patch, HBASE-13376_v4_0.98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_v3_0.98.patch Patch with review comments addressed. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Fix For: 2.0.0, 1.3.0 Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.98_v2.patch, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_5_branch-1.patch, HBASE-13376_6_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch, HBASE-13376_v3_0.98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Status: Patch Available (was: Reopened) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 0.98.12, 1.0.0 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Fix For: 2.0.0, 1.3.0 Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.98_v2.patch, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_5_branch-1.patch, HBASE-13376_6_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch, HBASE-13376_v3_0.98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_0.98_v2.patch Could this patch be committed to 0.98 branch ? This patch is slightly different that branch-1 and master. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Fix For: 2.0.0, 1.3.0 Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.98_v2.patch, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_5_branch-1.patch, HBASE-13376_6_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Attachment: 13376_4.patch Retry patch v4 Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_5_branch-1.patch Patch for branch-1 Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Fix For: 2.0.0 Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_5_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_6_branch-1.patch Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Fix For: 2.0.0 Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_5_branch-1.patch, HBASE-13376_6_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Attachment: 13376-v5.patch Patch v5 changes 'lowest local' to 'lowest locality' Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Hadoop Flags: Reviewed Fix Version/s: 2.0.0 Patch v5 doesn't apply cleanly on branch-1 [~avandana]: Mind attaching patch for branch-1 ? Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Fix For: 2.0.0 Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Status: Open (was: Patch Available) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 0.98.12, 1.0.0 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Fix For: 2.0.0 Attachments: 13376-v2.txt, 13376-v5.patch, 13376_4.patch, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_4.patch Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_4.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_3.patch Attaching again to trigger a new jenkins job. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_3.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Status: Open (was: Patch Available) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 0.98.12, 1.0.0 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_2.patch Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: (was: HBASE-13376_2.patch) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Status: Patch Available (was: Open) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 0.98.12, 1.0.0 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_3.patch Renamed the patch to avoid confusion. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_3.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Status: Patch Available (was: Open) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 0.98.12, 1.0.0 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_2.patch Removed the code where I was using Rand() to randomly pick one server above average load. That was causing the long time, hence less number of steps were executed in the balancer. So for a given time, the regions were never balanced. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2.patch, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Status: Open (was: Patch Available) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 0.98.12, 1.0.0 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_branch-1.patch renamed the patch file. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_2_branch-1.patch Fixed failing test. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Status: Patch Available (was: Open) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 0.98.12, 1.0.0 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Attachment: 13376-v2.txt Same patch as the previous one which was based on master branch Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376.patch patch for master Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: 13376-v2.txt, HBASE-13376.patch, HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_2_branch-1.patch, HBASE-13376_98.patch, HBASE-13376_branch-1.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_1_1.txt Updated patch for branch-1 with review comments addressed. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_1_1.txt, HBASE-13376_98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ted Yu updated HBASE-13376: --- Status: Open (was: Patch Available) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 0.98.12, 1.0.0 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_1.txt changes to fix the NPE. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_1.txt, HBASE-13376_98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_0.txt patch for master branch. All the unit tests related to the changes are passing. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: HBASE-13376_0.98.txt, HBASE-13376_0.txt, HBASE-13376_98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_0.98.txt Renamed the patch file. [~stack] I will try to provide a patch for the master branch today. Sorry for the late replies, I was out of office last week. Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: HBASE-13376_0.98.txt, HBASE-13376_98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Status: Patch Available (was: Open) Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 0.98.12, 1.0.0 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: HBASE-13376_98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HBASE-13376) Improvements to Stochastic load balancer
[ https://issues.apache.org/jira/browse/HBASE-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vandana Ayyalasomayajula updated HBASE-13376: - Attachment: HBASE-13376_98.patch Improvements to Stochastic load balancer Key: HBASE-13376 URL: https://issues.apache.org/jira/browse/HBASE-13376 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.0.0, 0.98.12 Reporter: Vandana Ayyalasomayajula Assignee: Vandana Ayyalasomayajula Priority: Minor Attachments: HBASE-13376_98.patch There are two things this jira tries to address: 1. The locality picker in the stochastic balancer does not pick regions with least locality as candidates for swap/move. So when any user configures locality cost in the configs, the balancer does not always seems to move regions with bad locality. 2. When a cluster has equal number of loaded regions, it always picks the first one. It should pick a random region on one of the equally loaded servers. This improves a chance of finding a good candidate, when load picker is invoked several times. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
