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From "Josh Elser (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-638) Accumulo integration with Titan Graph database
Date Thu, 13 Aug 2015 16:43:46 GMT


Josh Elser commented on ACCUMULO-638:

Looks like I can't directly comment on Github (maybe because I'm only looking at a diff and
not an actually PR?)

* Some commented stuff in the pom.xml. Should probably be deleted.
* {{AccumuloKCVS.getSlice(KeySliceQuery, StoreTransaction)}} can probably just use a Scanner
instead of a BatchScanner. Don't need to pay extra costs for a single row lookup.
* Should {{AccumuloKCVS.getSlice(KeySliceQuery, StoreTransaction)}} throw a PermanentBackendException
instead of Temporary for the IllegalArgumentException generated by a bad Range? If it fails
once, it will continue to fail with the same data.
* UTF-8 on the new Strings in ScanConfig.getIteratorSettings()?

Otherwise it looks very nice. Saw correct looking usage of locality groups. Resources appeared
to be getting closed. 

> Accumulo integration with Titan Graph database
> ----------------------------------------------
>                 Key: ACCUMULO-638
>                 URL:
>             Project: Accumulo
>          Issue Type: New Feature
>          Components: contrib
>            Reporter: Jason Trost
>            Assignee: Russ Weeks
>            Priority: Minor
> Titan graph database ( was recently open sourced
(Apache 2 License).  It is a "distributed graph database optimized for processing massive-scale
graphs represented over a machine cluster".  It currently supports storing data in both Cassandra
and HBase.  I believe Accumulo support should be added as well.
> Other references:
>  -
>  -

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