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https://issues.apache.org/jira/browse/STORM-876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14988061#comment-14988061
]
ASF GitHub Bot commented on STORM-876:
--------------------------------------
Github user d2r commented on the pull request:
https://github.com/apache/storm/pull/845#issuecomment-153478106
storm.thrift:
```
struct AccessControl {
1: required AccessControlType type;
2: optional string name; //Name of user or group in ACL
3: required i32 access; //bitmasks READ=0x1, WRITE=0x2, ADMIN=0x4
}
```
Really this should be a `union` of two types: `OtherAccessControl`, which
lacks a `name`, and `UserAccessControl`, which requires `name`.
It's invalid to have `type == AccessControlType.OTHER` and with a `name`,
or to have `type == AccessControlType.USER` without a `name`.
> 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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