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Cauchy-NY
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Jun 9, 2023
| "[FaultTolerance][MigrationPolicy][iginx={}, id={}] generate migration plan", | ||
| metaManager.getIginxId(), | ||
| sourceStorageId); | ||
| for (StorageUnitMeta meta : metaManager.getStorageUnits()) { |
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| import java.util.Map; | ||
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| public class StorageMigrationPlan { |
| 2: required list<RemovedStorageEngineInfo> dummyStorageInfoList | ||
| } | ||
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| struct RemoveStorageEngineReq { |
Collaborator
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我认为同步异步应该拆成两个接口
- 同步接口返回执行的状态，标识移除节点的任务完成情况
- 异步节点返回任务id，用户能根据任务id来查询对应任务的执行情况
基于2，应该新增一个查询任务状态的接口
| .stream() | ||
| .filter(e -> !e.isDummy()) | ||
| .filter(e -> e.getState() != StorageUnitState.DISCARD) | ||
| .collect(Collectors.groupingBy(StorageUnitMeta::getStorageEngineId)); |
Collaborator
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这块我理解没必要进行分类，从上下文来看，主要想获取两个信息
- 待删除节点内的du
- 所有的节点list
| priorities.sort(StoragePriority::compareTo); | ||
| long avoid = sourceStorageId; | ||
| if (!storageUnit.isMaster()) { | ||
| StorageUnitMeta masterUnit = metaManager.getStorageUnit(storageUnit.getMasterId()); |
Collaborator
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没有avoid其他非主du，可能会出现两个副本存在同一个存储节点上的情况
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| import cn.edu.tsinghua.iginx.metadata.IMetaManager; | ||
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| public abstract class StorageMigrationPolicy { |
Collaborator
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MigrationPolicy——StorageMigrationPolicy
GreedyMigrationPolicy——GreedyStorageMigrationPolicy
他们之间的区别是什么，从名字上来看不是很直观能看出区别
| } | ||
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| @Override | ||
| public Status removeStorageEngine(RemoveStorageEngineReq req) { |
Collaborator
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移除节点&迁移数据一般都是个比较长的过程，是否应该考虑用户重复发请求的情况呢
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