diff --git a/docs/reference/migration/migrate_5_0/settings.asciidoc b/docs/reference/migration/migrate_5_0/settings.asciidoc index 479b60aa48d..b17881c6204 100644 --- a/docs/reference/migration/migrate_5_0/settings.asciidoc +++ b/docs/reference/migration/migrate_5_0/settings.asciidoc @@ -66,6 +66,10 @@ pick the first interface not marked as loopback. Instead, specify by address scope (e.g. `_local_,_site_` for all loopback and private network addresses) or by explicit interface names, hostnames, or addresses. +The `netty.epollBugWorkaround` settings is removed. This settings allow people to enable +a netty work around for https://github.com/netty/netty/issues/327[a high CPU usage issue] with early JVM versions. +This bug was http://bugs.java.com/view_bug.do?bug_id=6403933[fixed in Java 7]. Since Elasticsearch 5.0 requires Java 8 the settings is removed. Note that if the workaround needs to be reintroduced you can still set the `org.jboss.netty.epollBugWorkaround` system property to control Netty directly. + ==== Forbid changing of thread pool types Previously, <> could be dynamically