Supporting dynamic scheduling in MTS #398
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abhinav04sharma
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Nov 6, 2016
| SKIP_OPEN_TABLE}, | ||
| {"WORKER", 21, MYSQL_TYPE_LONGLONG, 0, MY_I_S_UNSIGNED, "Worker ID", | ||
| SKIP_OPEN_TABLE}, | ||
| {"DB_LOAD", 21, MYSQL_TYPE_LONGLONG, 0, MY_I_S_UNSIGNED, "DB Load", |
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This denotes the load on the DB since the last checkpoint, not the total load since the server started.
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Summary: Statically assigning shards to slave workers can cause imbalance if a few shards are hotter than others. We should be able to check the imbalance among slave workers and dynamically reassign shards. Test Plan: Check if all test cases pass and ascertain if the code kicks off when imbalance occurs
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Summary: Statically assigning shards to slave workers can cause imbalance if a few shards are hotter than others. We should be able to check the imbalance among slave workers and dynamically reassign shards. Closes facebook#398 Github Author: Abhinav Sharma <abhinavsharma@fb.com> Github PR Sync: {sync, type="child", parent="github", parentrepo="facebook/mysql-5.6", parentprnum="398", parentprfbid="203659330076618"} Test Plan: Check if all test cases pass and ascertain if the code kicks off when imbalance occurs Reviewers: santoshb, svcscm Reviewed By: santoshb, svcscm Subscribers: svcscm, webscalesql-eng@ Differential Revision: https://phabricator.intern.facebook.com/D4134877 Tasks: 11720554 Signature: t1:4134877:1479516874:7653c8d789eb229322f1915705aba3dd348629b3
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Summary: Statically assigning shards to slave workers can cause imbalance if a few shards are hotter than others. We should be able to check the imbalance among slave workers and dynamically reassign shards. Closes #398 Reviewed By: santoshbanda Differential Revision: D4134877 Pulled By: abhinav04sharma fbshipit-source-id: 0700fcd
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Summary: Statically assigning shards to slave workers can cause imbalance if a few shards are hotter than others. We should be able to check the imbalance among slave workers and dynamically reassign shards. Closes facebook#398 Reviewed By: santoshbanda Differential Revision: D4134877 Pulled By: abhinav04sharma fbshipit-source-id: 0700fcd
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Summary: Statically assigning shards to slave workers can cause imbalance if a few shards are hotter than others. We should be able to check the imbalance among slave workers and dynamically reassign shards.
Test Plan: Check if all test cases pass and ascertain if the code kicks off when imbalance occurs