Distributed Transaction Hints¶

In HopsFS the metadata is partitioned using the inodes’ id. HopsFS tries to to enlist the transactional filesystem operation on the database node that holds the metadata for the file/directory being manipulated by the operation. Distributed transaction hints configuration parameteres are defined in hdfs-site.xml file.

• dfs.ndb.setpartitionkey.enabled: (true/false) Enable/Disable transaction partition key hint.
• dfs.ndb.setrandompartitionkey.enabled: (true/false) Enable/Disable random partition key hint when HopsFS fails to determine appropriate partition key for the transactional filesystem operation.