You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@drill.apache.org by "Bowen Ding (Jira)" <ji...@apache.org> on 2020/06/26 14:14:00 UTC

[jira] [Created] (DRILL-7756) Storage IPFS: GroupScan: detect malformed datasets when planning

Bowen Ding created DRILL-7756:
---------------------------------

             Summary: Storage IPFS: GroupScan: detect malformed datasets when planning
                 Key: DRILL-7756
                 URL: https://issues.apache.org/jira/browse/DRILL-7756
             Project: Apache Drill
          Issue Type: Bug
          Components: Storage - Other
            Reporter: Bowen Ding
            Assignee: Bowen Ding


The initial design of a Drill-queriable dataset on IPFS is a MerkleTree, where the leaf nodes contain the actual data, and the intermediate nodes record the hashes of the leaf nodes. Not all datasets in the wild are well-formed MerkleTrees, because IPFS allows arbitrary DAGs. 

The current implementation in IPFSGroupScan does not check if a dataset is well-formed, and if it contains recursive links, the planner will have no way to detect it and will loop forever.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)