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https://issues.apache.org/jira/browse/STORM-876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14988708#comment-14988708
]
ASF GitHub Bot commented on STORM-876:
--------------------------------------
Github user redsanket commented on a diff in the pull request:
https://github.com/apache/storm/pull/845#discussion_r43833973
--- Diff: storm-core/src/clj/backtype/storm/config.clj ---
@@ -112,6 +124,10 @@
(FileUtils/forceMkdir (File. ret))
ret ))
+(defn read-supervisor-storm-conf-given-path
+ [conf stormconf-path]
+ (merge conf (clojurify-structure (Utils/fromCompressedJsonConf
(FileUtils/readFileToByteArray (File. stormconf-path))))))
--- End diff --
Used it
(defn read-supervisor-storm-conf
[conf storm-id]
(let [stormroot (supervisor-stormdist-root conf storm-id)
conf-path (supervisor-stormconf-path stormroot)
topology-path (supervisor-stormcode-path stormroot)]
(read-supervisor-storm-conf-given-path conf conf-path)))
> 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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