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https://issues.apache.org/jira/browse/STORM-876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15025481#comment-15025481
]
ASF GitHub Bot commented on STORM-876:
--------------------------------------
Github user d2r commented on the pull request:
https://github.com/apache/storm/pull/845#issuecomment-159413532
backtype.storm.utils.Utils
After an upmerge, it looks like we cleaned up some duplicate method
declarations. However, much of the remaining code is duplicated elsewhere.
```
664 public static <T> T thriftDeserialize(Class c, byte[] b) {
665 try {
666 T ret = (T) c.newInstance();
667 TDeserializer des = getDes();
668 des.deserialize((TBase) ret, b);
669 return ret;
670 } catch (Exception e) {
671 throw new RuntimeException(e);
672 }
673
674 }
```
This should just call `Utils.thriftDeserialize(c, b, 0, b.length)`
> 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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