Hi everybody, just a reminder that the upgrade is scheduled for tomorrow EU/CET morning.
Luca 2018-01-23 17:58 GMT+01:00 Luca Toscano <ltosc...@wikimedia.org>: > *TL;DR*: The Analytics Hadoop cluster will be completely down for max 2h > on *Feb 6th* (EU/CET morning) to upgrade all the daemons to Java 8. > > Hi everybody, > > we are planning to upgrade the Analytics Hadoop cluster to Java 8 on *Feb > 6th* (EU/CET morning) for https://phabricator.wikimedia.org/T166248. > Sadly we can't do a rolling upgrade of all the jvm-based Hadoop daemons > since the distribution that we use (Cloudera) suggests to perform the > upgrade only after a complete cluster shutdown. This means that for a > couple of hours (hopefully a lot less) all the Hadoop based services will > be unavailable (Hive, Oozie, HDFS, etc..). > > We have tested the new configuration in labs and all the regular Analytics > jobs seem to work correctly, so we don't expect major issues after the > upgrade, but if you have any question or concern please follow up in the > task. > > Thanks! > > Luca and Andrew (on behalf of the Analytics team) > _______________________________________________ Wiki-research-l mailing list Wiki-research-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wiki-research-l