DATA PLACEMENT TRANSPARENCY FOR HIGH AVAILABILITY AND LOAD BALANCING
    6.
    发明申请
    DATA PLACEMENT TRANSPARENCY FOR HIGH AVAILABILITY AND LOAD BALANCING 审中-公开
    数据放置高可用性和负载平衡的透明度

    公开(公告)号:US20100082551A1

    公开(公告)日:2010-04-01

    申请号:US12238852

    申请日:2008-09-26

    IPC分类号: G06F17/30

    CPC分类号: G06F16/24524 G06F16/27

    摘要: A method of updating a clone data map associated with a plurality of nodes of a computer system is disclosed. The clone data map includes node identification data and clone location data. A node failure event of a failed node of the computer system that supports a primary clone is detected. The clone data map is updated such that a secondary clone stored at a node other than the failed node is marked as a new primary clone. In addition, clone data maps may be used to perform node load balancing by placing a substantially similar number of primary clones on each node of a node cluster or may be used to increase or decrease a number of nodes of the node cluster. Further, data fragments that have a heavy usage or a large fragment size may be reduced in size by performing one or more data fragment split operations.

    摘要翻译: 公开了一种更新与计算机系统的多个节点相关联的克隆数据映射的方法。 克隆数据图包括节点标识数据和克隆位置数据。 检测到支持主克隆的计算机系统的故障节点的节点故障事件。 更新克隆数据图,使得存储在除故障节点之外的节点的次级克隆被标记为新的主克隆。 此外,克隆数据映射可以用于通过将基本上相似数量的主克隆放置在节点簇的每个节点上来执行节点负载平衡,或者可以用于增加或减少节点簇的多个节点。 此外,可以通过执行一个或多个数据片段拆分操作来减小具有较大使用量或大片段大小的数据片段的大小。

    Database fragment cloning and management
    7.
    发明申请
    Database fragment cloning and management 有权
    数据库片段克隆和管理

    公开(公告)号:US20070043749A1

    公开(公告)日:2007-02-22

    申请号:US11207482

    申请日:2005-08-19

    IPC分类号: G06F7/00

    摘要: Mechanisms and techniques for database fragment cloning and management are provided. A database object, such as a table, rowset or index, is divided into fragments. Each fragment is cloned to create cloned fragments, which operationally are substantially identical to one another. One or more of the cloned fragments may be designated as a primary cloned fragment for performing database operations or as a secondary cloned fragment for serving as backup. Updates to each fragment are implemented on the primary cloned fragment and are then propagated from the primary cloned fragment to the corresponding secondary cloned fragments. A cloned fragment can go offline, becoming unavailable to be updated. When the cloned fragment returns online, the cloned fragment is refreshed with data included in the primary cloned fragment. While being refreshed, the cloned fragment may continue to be updated. The cloned fragment is eligible to be designated as a primary cloned fragment when the refreshing process has been completed.

    摘要翻译: 提供了数据库片段克隆和管理的机制和技术。 数据库对象(如表,行集或索引)被划分成片段。 克隆每个片段以产生克隆的片段,其在操作上基本上彼此相同。 可以将一个或多个克隆的片段指定为用于执行数据库操作的主要克隆片段或用作备份的辅助克隆片段。 对每个片段的更新在主要克隆片段上实现,然后从主要克隆片段扩增到相应的次级克隆片段。 克隆的片段可以脱机,不可更新。 当克隆片段返回联机时,克隆片段将使用包含在主克隆片段中的数据进行刷新。 刷新时,克隆片段可能会继续更新。 当刷新过程完成时,克隆片段有资格被指定为主要的克隆片段。