Github user mxm commented on a diff in the pull request: https://github.com/apache/flink/pull/2249#discussion_r71178603 --- Diff: docs/setup/config.md --- @@ -272,7 +272,9 @@ For example when running Flink on YARN on an environment with a restrictive fire - `recovery.zookeeper.quorum`: Defines the ZooKeeper quorum URL which is used to connet to the ZooKeeper cluster when the 'zookeeper' recovery mode is selected -- `recovery.zookeeper.path.root`: (Default '/flink') Defines the root dir under which the ZooKeeper recovery mode will create znodes. +- `recovery.zookeeper.path.root`: (Default '/flink') Defines the root dir under which the ZooKeeper recovery mode will create namespace directories. + +- `recovery.zookeeper.path.namespace`: (Default '/default_ns' in standalone mode, or the <yarn-application-id> under Yarn) Defines the subdirectory under the root dir where the ZooKeeper recovery mode will create znodes. This allows to isolate multiple applications on the same ZooKeeper. --- End diff -- It would be nice to have a default namespace for the standalone mode as well. How about generating a namespace from the `masters` files. Would hashing the contents of the file be a good fit? That should be consistent across all master nodes.
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