内容简介:WiredTiger 2.9.2 发布,MongoDB 存储引擎
MongoDB 存储引擎 WiredTiger 2.9.2 发布了,有关详细信息,请参阅 更改日志 。有如下重要更改:
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SERVER-16796 Increase logging activity for journal recovery operations
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SERVER-28168 Cannot start or repair MongoDB after unexpected shutdown.
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SERVER-28194 Fix a bug where a missing WiredTiger.turtle file can result in data loss
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WT-98 Update the current cursor value without a search
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WT-2439 Enhance reconciliation page layout
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WT-2898 Improve performance of eviction-heavy workloads by dynamically controlling the number of eviction threads
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WT-3097 Race on reconfigure or shutdown can lead to waiting for statistics log server
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WT-3106 Add truncate support to command line wt utility
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WT-3114 Avoid archiving log files immediately after recovery
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WT-3115 Change the dhandle lock to a read/write lock
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WT-3127 Fix a bug with CPU yield calls don't necessarily imply memory barriers
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WT-3135 Fix a bug with search_near() for index with custom collator
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WT-3137 Fix a hang in __log_slot_join/__log_slot_switch_internal
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WT-3144 Fix a bug where random cursor returns not-found when descending to an empty page
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WT-3148 Improve eviction efficiency with many small trees
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WT-3149 Change eviction to start new walks from a random place in the tree
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WT-3150 Reduce impact of checkpoints on eviction server
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WT-3152 Convert table lock from a spinlock to a read write lock
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WT-3157 Fix a bug in checkpoint/transaction integrity issue when writes fail.
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WT-3158 Fix structure packing on Windows.
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WT-3188 Fix error handling in logging where fatal errors could lead to a hang
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WT-3193 Close a race between verify opening a handle and eviction visiting it
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WT-3206 Fix a bug where core dump happened on NULL page index
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WT-3218 Fix a bug that could lead to unexpected checkpoint ordering failures
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WT-3243 Reorder log slot release so joins don't wait on IO
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WT-3262 Stop making schema operations wait for cache
有关完整列表,请参阅 JIRA 更改日志: https://jira.mongodb.org/browse/WT/fixforversion/17874
下载地址:
WiredTiger 是一个开源的、高性能、可伸缩的 MongoDB 数据存储引擎。
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Java5.0Tiger程序高手秘笈
BrettMclaughlin / 东南大学出版社 / 2005-10 / 28.00元
代号为 “Tiger”的下一个 Java 版本,不只是个小改动版。在语言核心中有超过 100 项以上的变动,同时有大量的对 library 与 API 所做的加强,让开发者取得许多新的功能、工具与技术。但在如此多的变化下,应该从何处开始着手?也许可以从既长又无趣的语言规范说明书开始看起;或等待最少 500 页的概念与理论巨著出版;甚至还可以直接把玩新的 JDK 看看能够有什么发现;或者借由《Jav......一起来看看 《Java5.0Tiger程序高手秘笈》 这本书的介绍吧!
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