[jira] [Created] (DRILL-8359) Add mount and unmount command support to the filesystem plugin

["James Turton (Jira)" <ji...@apache.org>]

James Turton created DRILL-8359:
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             Summary: Add mount and unmount command support to the filesystem plugin
                 Key: DRILL-8359
                 URL: https://issues.apache.org/jira/browse/DRILL-8359
             Project: Apache Drill
          Issue Type: Improvement
          Components: Storage - File
    Affects Versions: 1.20.2
            Reporter: James Turton
            Assignee: James Turton
             Fix For: 2.0.0


This Jira proposes optional mount and unmount commands in the filesystem plugin with the goal of enabling the dynamic definition of filesystem mounts in the storage configuration. It is mainly anticpiated that network and cloud filesystems that have FUSE drivers will be used in this way but local device mounts and image/loop device mounts (ISO, IMG, squashfs, etc.) might also be of interest.

 

The provided commands are executed in their own processes by the host OS and run under the OS user that is running the Drill JVM. The mount command will be executed when an enabled plugin is initialised (something that is done lazily) and whenever it transitions from disabled to enabled. The provided unmount command will be executed whenever a plugin transitions from enabled to disabled and when the Drillbit shuts down while the plugin has been initialised and is enabled.

 

Example. TODO
{code:java}
{
  "type": "file",
  "connection": "file:///",
  "mountCommand": "touch /tmp/foo.drill",
  "unmountCommand": "rm /tmp/foo.drill",
  "workspaces": { ...
 
  {code}
 



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