HIGH AVAILABILITY AND DISASTER RECOVERY IN LARGE-SCALE DATA WAREHOUSE

摘要

Techniques and mechanisms described herein facilitate the management of data centers. According to various embodiments, a first query dispatcher at a first data center may be disabled. The first data center may include a first data cluster and a first database. The first query dispatcher may be configured to dispatch queries to access data in the first data cluster and in a second data cluster at a second data center. The second data cluster may replicate data stored in the first data cluster. Metadata stored in the first database may be replicated to a second database in the second data center. The metadata may describe a state of the first data cluster. A second query dispatcher may be enabled at the second data center. The second query dispatcher may be configured to dispatch queries to access data in the second data cluster.

主权项

1. A method comprising:
disabling a first query dispatcher at a first data center, the first data center including a first data cluster and a first database, the first query dispatcher configured to dispatch queries to access data in the first data cluster and in a second data cluster at a second data center, the second data cluster replicating data stored in the first data cluster; replicating metadata stored in the first database to a second database in the second data center, the metadata describing a state of the first data cluster; and enabling a second query dispatcher at the second data center, the second query dispatcher configured to dispatch queries to access data in the second data cluster.