Announcing MOSN v1.4.0

We are happy to announce the release of MOSN v1.4.0.

v1.4.0

New Features

• Support record HTTP health check log (#2096) @dengqian
• Add least_connection load balancer (#2184) @dengqian
• Add API to force reconnect and send ADS request (#2183) @dengqian
• Support pprof debug server endpoint configure (#2202) @dengqian
• Integrate with mosn.io/envoy-go-extension, consult document (#2200) @antJack (#2222) @3062
• Add API to support override registration (mosn/pkg#72) @antJack
• Add a field in variables to record mosn processing time (#2235) @z2z23n0
• Support setting cluster idle_timeout to zero to indicate never timeout (#2197) @antJack

Refactoring

• Move pprof import to pkg/mosn (#2216) @3062

Optimization

• Reduce logging for proxywasm benchmarks (#2189) @Crypt Keeper

Bug fixes

• Enlarge UDP DNS resolve buffer (#2201) @dengqian
• Fix the debug server not inherited during smooth upgrade (#2204) @dengqian
• Fix where new mosn would delete reconfig.sock when smooth upgrade failed (#2205) @dengqian
• Fix HTTP health check URL with query string will be unescaped (#2207) @dengqian
• Fix lb ReqRoundRobin fails to choose host when index exceeds hosts length (#2209) @dengqian
• Fix the problem that after RDS creates a route, the established connection cannot find the route (#2199) @dengqian (#2210) @3062
• Fix old cache values are read after the execution of Variable.Set (mosn/pkg#73) @antJack
• Fix panic caused by DefaultRoller not setting time (mosn/pkg#74) @dengqian
• Advance the timing of metrics initialization to make it work for static config (#2221) @dengqian
• Fix a concurrency problem caused by multiple health checkers sharing rander (#2228) @dengqian
• Set HTTP/1.1 as the HTTP protocol to be sent upstream (#2225) @dengqian
• Completing the missing statistics (#2215) @3062

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