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https://issues.apache.org/jira/browse/STORM-876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14987603#comment-14987603
]
ASF GitHub Bot commented on STORM-876:
--------------------------------------
Github user revans2 commented on a diff in the pull request:
https://github.com/apache/storm/pull/845#discussion_r43774215
--- Diff: storm-core/src/clj/backtype/storm/daemon/nimbus.clj ---
@@ -130,22 +166,30 @@
(defn inbox [nimbus]
(master-inbox (:conf nimbus)))
-(defn- read-storm-conf [conf storm-id]
- (let [stormroot (master-stormdist-root conf storm-id)]
- (merge conf
- (clojurify-structure
- (Utils/fromCompressedJsonConf
- (FileUtils/readFileToByteArray
- (File. (master-stormconf-path stormroot))))))))
+(defn- get-subject []
+ (let [req (ReqContext/context)]
+ (.subject req)))
+
+(defn- read-storm-conf [conf storm-id blob-store]
+ (clojurify-structure
+ (Utils/fromCompressedJsonConf
+ (.readBlob blob-store (master-stormconf-key storm-id)
(get-subject)))))
(declare delay-event)
(declare mk-assignments)
+(defn- get-key-list-from-id [conf id]
+ (log-debug "set keys id = " id "set = " #{(master-stormcode-key id)
(master-stormjar-key id) (master-stormconf-key id)})
+ (if (local-mode? conf)
+ [(master-stormcode-key id) (master-stormconf-key id)]
+ [(master-stormcode-key id) (master-stormjar-key id)
(master-stormconf-key id)]
+ ))
--- End diff --
put these on the previous line please.
> Dist Cache: Basic Functionality
> -------------------------------
>
> Key: STORM-876
> URL: https://issues.apache.org/jira/browse/STORM-876
> Project: Apache Storm
> Issue Type: Improvement
> Components: storm-core
> Reporter: Robert Joseph Evans
> Assignee: Robert Joseph Evans
> Attachments: DISTCACHE.md, DistributedCacheDesignDocument.pdf
>
>
> Basic functionality for the Dist Cache feature.
> As part of this a new API should be added to support uploading and
> downloading dist cache items. storm-core.ser, storm-conf.ser and storm.jar
> should be written into the blob store instead of residing locally. We need a
> default implementation of the blob store that does essentially what nimbus
> currently does and does not need anything extra. But having an HDFS backend
> too would be great for scalability and HA.
> The supervisor should provide a way to download and manage these blobs and
> provide a working directory for the worker process with symlinks to the
> blobs. It should also allow the blobs to be updated and switch the symlink
> atomically to point to the new blob once it is downloaded.
> All of this is already done by code internal to Yahoo! we are in the process
> of getting it ready to push back to open source shortly.
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