Github user revans2 commented on a diff in the pull request:

    https://github.com/apache/storm/pull/845#discussion_r43770299
  
    --- Diff: storm-core/src/clj/backtype/storm/cluster.clj ---
    @@ -593,18 +612,22 @@
             (let [thrift-assignment (thriftify-assignment info)]
               (set-data cluster-state (assignment-path storm-id) 
(Utils/serialize thrift-assignment) acls)))
     
    -      (setup-code-distributor!
    -        [this storm-id nimbusInfo]
    -        (let [path (str (code-distributor-path storm-id) "/" 
(.toHostPortString nimbusInfo))]
    -        (mkdirs cluster-state (code-distributor-path storm-id) acls)
    -        ;we delete the node first to ensure the node gets created as part 
of this session only.
    -        (delete-node cluster-state path)
    -        (set-ephemeral-node cluster-state path nil acls)))
    +      (setup-blobstore!
    +        [this key nimbusInfo versionInfo]
    +        (let [path (str (blobstore-path key) "/" (.toHostPortString 
nimbusInfo) "-" versionInfo)]
    +          (mkdirs cluster-state (blobstore-path key) acls)
    +          ;we delete the node first to ensure the node gets created as 
part of this session only.
    +          (delete-node-blobstore cluster-state (str (blobstore-path key)) 
(.toHostPortString nimbusInfo))
    +          (set-ephemeral-node cluster-state path nil acls)))
    +
    +      (remove-blobstore-key!
    +        [this blob-key]
    +        (log-debug "removing key" blob-key)
    +        (delete-node cluster-state (blobstore-path blob-key)))
     
           (remove-storm!
             [this storm-id]
             (delete-node cluster-state (assignment-path storm-id))
    -        (delete-node cluster-state (code-distributor-path storm-id))
    --- End diff --
    
    How are the storm-jar, storm-conf, and storm-topology deleted from the blob 
store when the topology is removed?


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