We should upgrade to Elasticsearch 0.90.6 now that it is out.
I propose performing the upgrade in dev and verifying it using the Cirrus regression test suite. After that we can apply it to beta, manually verify again, and then push it to the cluster.
Version: wmf-deployment
Severity: enhancement
Assigning to Andrew as he must perform the first step in the chain: get the deb into our repository. It'd be best to put it in just the labs machines first but it is ok to get it into the main one as we'll only perform the update when we're ready.
Meh, screw that, they are cutting a 0.90.7 in a day or so for https://github.com/elasticsearch/elasticsearch/issues/4078 .