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Beats version 5.0.0-alpha4

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Beats version 5.0.0-alpha4

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Breaking changes

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Affecting all Beats

The topology_expire option of the Elasticsearch output was removed. 1907

Filebeat

Stop following symlink. Symlinks are now ignored: 1686

Bugfixes

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Affecting all Beats

Reset backoff factor on partial ACK. 1803
Fix beats load balancer deadlock if max_retries: -1 or publish_async is enabled in filebeat. 1829
Fix logstash output with pipelining mode enabled not reconnecting. 1876
Empty configuration sections become merge-able with variables containing full path. 1900
Fix error message about required fields missing not printing the missing field name. 1900

Metricbeat

Fix the CPU values returned for each core. 1863

Packetbeat

Add missing nil-check to memcached GapInStream handler. 1162
Fix NFSv4 Operation returning the first found first-class operation available in compound requests. 1821
Fix TCP overlapping segments not being handled correctly. 1898

Winlogbeat

Fix issue with rendering forwarded event log records. 1891

Added

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Affecting all Beats

Improve error message if compiling regular expression from config files fails. 1900
Compression support in the Elasticsearch output. 1835

Metricbeat

Add MongoDB module. 1837

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