We are trying to install x-pack for versions 5.5.1, 5.5.2 and 5.6.0 of Elasticsearch.
But the same problem occurred:
org.elasticsearch.bootstrap.StartupException: ElasticsearchException[Failed to create native process factories for Machine Learning]; nested: FileNotFoundException[\.\pipe\controller_log_8580 (Le fichier spécifié est introuvable)];
We have found the cause of this problem and fixed the code. The fix will be released in future patches of all versions of the stack from 5.5 upwards. At the moment I cannot confirm the exact patch versions the fix will be in, but will update this post when I know, and the fix will also be listed in the release notes.
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