Apache Mesos 0.23.0 发布，集群管理器

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　　Apache Mesos 0.23.0 发布，此版本主要改进：

• 　　[MESOS-692] - Reservations are not reported in master's state.json
  
• 　　[MESOS-994] - Add an Option os::getenv() to stout
  
• 　　[MESOS-1733]- Change the stout path utility to declare a single, variadic 'join' function instead of several separate declarations of various discrete arities
  
• 　　[MESOS-1991] - Remove dynamic allocation from Option
  
• 　　[MESOS-2023] - mesos-execute should allow setting environment variables
  
• 　　[MESOS-2050] - Revise Authenticator interface
  
• 　　[MESOS-2057] - Concurrency control for fetcher cache
  
• 　　[MESOS-2069] - Basic fetcher cache functionality
  
• 　　[MESOS-2070] - Implement simple slave recovery behavior for fetcher cache
  
• 　　[MESOS-2072] - Fetcher cache eviction
  
• 　　[MESOS-2074] - Fetcher cache test fixture
  
• 　　[MESOS-2103] - Expose number of processes and threads in a container
  
• 　　[MESOS-2104] - Correct naming of cgroup memory statistics
  
• 　　[MESOS-2110] - Configurable Ping Timeouts
  
• 　　[MESOS-2111] - Add build instructions for OSX in getting started
  
• 　　[MESOS-2136] - Expose per-cgroup memory pressure
  
• 　　[MESOS-2155] - Make docker containerizer killing orphan containers optional
  
• 　　[MESOS-2277] - Document undocumented HTTP endpoints
  
• 　　[MESOS-2323] - write flags to log at startup
  
• 　　[MESOS-2332] - Report per-container metrics for network bandwidth throttling
  
• 　　[MESOS-2333] - Securing Sandboxes via Filebrowser Access Control
  
• 　　[MESOS-2340] - Add ability to decode JSON serialized MasterInfo from ZK
  
• 
  　　[MESOS-2374] - Support>
  
• 　　[MESOS-2392] - Rate limit slaves removals during master recovery.
  
• 　　[MESOS-2400] - Improve NsTest.ROOT_setns
  
• 　　[MESOS-2438] - Improve support for streaming HTTP Responses in libprocess.
  
• 　　[MESOS-2454] - Add support for /proc/self/mountinfo on Linux
  
• 　　[MESOS-2461] - Slave should provide details on processes running in its cgroups
  
• 　　[MESOS-2462] - Add option for Subprocess to set a death signal for the forked child
  
• 　　[MESOS-2485] - Add ability to distinguish slave removals metrics by reason.
  
• 　　[MESOS-2507] - Performance issue in the master when a large number of slaves are registering.
  
• 　　[MESOS-2519] - Log IP addresses from HTTP requests
  
• 　　[MESOS-2527] - Add default bind to socket
  
• 　　[MESOS-2528] - Symlink the namespace handle with ContainerID for the port mapping isolator.
  
• 　　[MESOS-2547] - Cleanup stale bind mounts for port mapping isolator during slave recovery.
  
• 　　[MESOS-2549] - Remove non-variadic strings::format
  
• 　　[MESOS-2550] - Mesos doesn't compile with clang 3.6
  
• 　　[MESOS-2565] - Clean up style and comments in modules.
  
• 　　[MESOS-2571] - Expose Memory Pressure in MemIsolator
  
• 　　[MESOS-2573] - Use Memory Test Helper to improve some test code.
  
• 　　[MESOS-2595] - Create docker executor
  
• 　　[MESOS-2604] - Upgrade minimum required compilers for MESOS
  
• 　　[MESOS-2608] - test-framework should support principal only credential
  
• 　　[MESOS-2609] - Move StatusUpdateStream implementation to a compilation unit
  
• 　　[MESOS-2620] - Implement a mechanism which allows access control of endpoints
  
• 　　[MESOS-2624] - "configure" should fail when "patch" is not available.
  
• 　　[MESOS-2653] - Slave should act on correction events from QoS controller
  
• 　　[MESOS-2654] - Update FrameworkInfo to opt in to revocable resources
  
• 　　[MESOS-2666] - use standard compiler detection macros
  
• 　　[MESOS-2680] - Update modules doc with hook usage example
  
• 　　[MESOS-2693] - Printing a resource should show information about reservation, disk etc
  
• 　　[MESOS-2709] - Design Master discovery functionality for HTTP-only clients
  
• 　　[MESOS-2716] - Add non-const reference version of Option::get.
  
• 　　[MESOS-2729] - Update DRF sorter to update total resources
  
• 　　[MESOS-2743] - Include ExecutorInfos for custom executors in master/state.json
  
• 　　[MESOS-2745] - Add 'Path' to stout's user guide
  
• 
  　　[MESOS-2752] - Add HTB queueing discipline wrapper>
  
• 　　[MESOS-2784] - Added constexpr to C++11 whitelist.
  
• 　　[MESOS-2793] - Add support for container rootfs to Mesos isolators
  
• 　　[MESOS-2801] - Remove dynamic allocation from Future
  
• 　　[MESOS-2804] - Log framework capabilities in the master.
  
• 　　[MESOS-2805] - Make synchronized as primary form of synchronization.
  
• 　　[MESOS-2836] - Report per-container metrics for network bandwidth throttling to the slave
  
• 　　[MESOS-2837] - Decode network statistics from mesos-network-helper
  
• 　　[MESOS-2870] - Add validation capability to stout Flags
  
• 　　[MESOS-2888] - Add SSL socket tests
  
• 　　[MESOS-2928] - Update stout #include headers
  
• 　　[MESOS-2940] - Reconciliation is expensive for large numbers of tasks.
  
• 　　[MESOS-2955] - Introduce acceptOffers scheduler driver API for performing operations on Offers
  
• 　　[MESOS-2957] - Add version to MasterInfo
  
• 　　[MESOS-2958] - Update Call protobuf to move top level FrameworkInfo inside Subscribe
  
• 　　[MESOS-2966] - socket::peer() and socket::address() might fail with SSL enabled
  

　　详细更新内容请看发行说明，现已提供下载：http://archive.apache.org/dist/mesos/0.23.0/mesos-0.23.0.tar.gz。
　　Apache Mesos 是一个集群管理器，提供了有效的、跨分布式应用或框架的资源隔离和共享，可以运行Hadoop、MPI、Hypertable、Spark。
　　特性：

• 　　Fault-tolerant replicated master using ZooKeeper
  
• 　　Scalability to 10,000s of nodes
  
• 　　Isolation between tasks with Linux Containers
  
• 　　Multi-resource scheduling (memory and CPU aware)
  
• 　　Java, Python and C++ APIs for developing new parallel applications
  
• 　　Web UI for viewing cluster state