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ASF GitHub Bot commented on STORM-876: -------------------------------------- Github user d2r commented on a diff in the pull request: https://github.com/apache/storm/pull/845#discussion_r45124638 --- Diff: storm-core/src/clj/backtype/storm/daemon/supervisor.clj --- @@ -24,9 +24,14 @@ [org.apache.commons.io FileUtils] [java.io File]) (:use [backtype.storm config util log timer local-state]) + (:import [backtype.storm.generated AuthorizationException KeyNotFoundException WorkerResources]) + (:import [java.util.concurrent Executors]) --- End diff -- Unused? > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)