Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/158#issuecomment-38892147
Hey @RongGu I think this can be simplified a lot by just putting all of the
RDD blocks inside of the application's Tachyon directory.
This patch in general has copied a lot of stuff from the `DiskStore` that
isn't needed or relevant to Tachyon. Creating all of the hashed sub-directories
and setting up hooks to delete them isn't necessary. You can just delete the
folder at the end.
I think this will allow you to remove a bunch of the code here and make
this much simpler. I've pointed out various cases where code could be removed.
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