Logstash 1.5.1发布，这个版本值得关注的更新在于修复了1.5.0版本if条件如果写成多行时报错的问题。
此版本更新内容如下：
1.5.1 (June 16, 2015)
general
Fixed an issue which caused Logstash to hang when used with single worker (-w 1) configuration. This issue was caused by a deadlock in the internal queue when the filter worker was trying to exclusively remove elements which conflicted with the periodic flushing in filters (#3361).
Fixed performance regression when using field reference syntax in config like [tweet][username]. This fix increases throughput in certain configs by 30% (#3238)
Windows: Added support to launch Logstash from a path with spaces (#2904)
Update to jruby-1.7.20 which brings in numerous fixes. This will also make file input work properly on FreeBSD.
Fixed regression in 1.5.0 where conditionals spread over multiple lines in a config was not working properly (#2850)
Fixed a permission issue in rpm and debian repos. When Logstash was installed using these repos, only the logstash user was able to run commands like bin/logstash version (#3249)
filter
GeoIP: Logstash no longer crashes when IPv6 addresses are used in lookup (#8)
output
Elasticsearch:
Added an option to disable SSL certificate verification (#160)
Bulk requests were timing out because of aggressive timeout setting in the HTTP client. Restored this to 1.4.2 behavior where there are no timeouts by default. As a follow up to this, we will be exposing an option to control timeouts in the HTTP client (#103)
JIRA:
Newly created issues now have description set (#3)
Summary field now expands variables in events
API authentication method changed from cookie to basic
下载地址：https://www.elastic.co/downloads/logstash
来自:开源中国社区
