There's also a secondary namenode, which isn't a redundant daemon for the namenode but instead provides period checkpointing and housekeeping tasks.
还有一个secondarynamenode，它不是 namenode的冗余守护进程，而是提供周期检查点和清理任务。
Automatic checkpoint Tuning - The Oracle Database can now self-tune checkpointing to achieve good recovery times with low impact on normal throughput.
AutomaticCheckpointTuning——Oracle数据库现在可以自调优检查点，从而取得良好的恢复速度，同时降低对正常吞吐量的影响。
ACID properties guarantee that solidDB transactions are processed reliably and that data is persisted to disk using checkpointing and transaction logging.
通过使用检查点和事务日志技术，ACID属性确保soliddb事务被可靠地处理并且数据被持久化到磁盘中。
Redo Logfile Sizing Advisor - This feature recommends the optimal size of redo log files in order to avoid excessive disk I/Os due to frequent checkpointing.
RedoLogfile SizingAdvisor ——此特性推荐重做日志文件的最佳大小，从而避免因频繁出现的检查点而导致过多的磁盘I/O。
In the current implementation, a checkpoint only occurs when the NameNode starts up. Work is in progress to support periodic checkpointing in the near future.
在当前实现中，checkpoint只发生在Namenode启动时，在不久的将来我们将实现支持周期性的checkpoint。
The proposed checkpointing scheme has no overhead of global consistency, and can ensure the least failure probability of each processor.
该检查点策略没有检查点全局一致性开销，可保证各处理机的失效率最低。
With the combination of checkpointing and task duplication, not only effective fault recovery but also perfect fault detection can be achieved.
将检查点与任务重复技术相结合，不仅能够完成有效的故障恢复，而且还能进行完善的故障检测。
Recovery activities like logging, checkpointing, backup and reloading are used to restore the database to a consistent state after a system crash has occurred.
为了能在数据库系统发生故障之后将数据库恢复到一个一致性的状态，恢复子系统需要进行记日志、做检验点、备份和故障后重装等活动。
Checkpoint is an important means to implement fault-tolerance in parallel system. Synchronous checkpointing method has been widely used in network of workstation system.
检查点是并行系统中实现容错的重要手段，同步检查点方法已广泛应用在工作站机群系统中。
Two bottlenecks, checkpointing protocol overhead and storage cost of checkpoint image, limit the scalability of checkpoint system, which is critical to large-scale clusters.
协议开销和检查点映像存储成为困扰并行检查点系统可伸缩性的两大瓶颈。
This paper analyzes the particularity of job checkpointing in computational grid, and proposes a novel application-level checkpoint mechanism based on job progress description (JPD).
分析了计算网格环境中实现检查点机制的特殊性，提出了一种新的应用级检查点方法：基于作业进展描述的检查点方法。
The performance of the application and the costs of the checkpointing and the roll-back recovery are analyzed by experiment, results of the comparison with other algorithms are also given.
本文通过实验对检测点设置开销、卷回恢复开销和应用程序的性能进行了分析，并与其它的检测点设置算法进行了比较。
In this dissertation, we have conducted a sophisticated theoretical and technical study on checkpoint technology, and improved the thread-based kernel level checkpoint to speed up checkpointing.
本文对检查点技术开展了广泛深入的理论与技术研究，改进了基于线程的内核级检查点机制，加快了设置检查点的速度。
Only those images that correspond to a consistent snapshot are written to the checkpoint file, and the row shadows allow the currently executing transactions to run unrestricted during checkpointing.
只有那些与一致性快照相符的镜像被写到检查点文件，行影子使当前执行的事务可以在检查点创建期间不受限制地运行。
Checkpointing and recovery systems are growing in importance in large-scale clusters.
在大规模机群环境下，检查点和恢复机制是一种必不可少的容错技术。
Checkpointing and recovery systems are growing in importance in large-scale clusters.
在大规模机群环境下，检查点和恢复机制是一种必不可少的容错技术。
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