[jira] [Created] (HDDS-1163) Basic framework for Ozone Data Scrubber

["Supratim Deka (JIRA)" <ji...@apache.org>]

Supratim Deka created HDDS-1163:
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             Summary: Basic framework for Ozone Data Scrubber
                 Key: HDDS-1163
                 URL: https://issues.apache.org/jira/browse/HDDS-1163
             Project: Hadoop Distributed Data Store
          Issue Type: Sub-task
          Components: Ozone Datanode
            Reporter: Supratim Deka
            Assignee: Supratim Deka


Included in the scope:
1. Background scanner thread to iterate over container set and dispatch check tasks for individual containers
2. Fixed rate scheduling - dispatch tasks at a pre-determined rate (for example 1 container/s)
3. Check disk layout of Container - basic check for integrity of the directory hierarchy inside the container, include chunk directory and metadata directories
4. Check container file - basic sanity checks for the container metafile
5. Check Block Database - iterate over entries in the container block database and check for the existence and accessibility of the chunks for each block

Not in scope (will be done as separate subtasks):
1. Dynamic scheduling/pacing of background scan based on system load and available resources.
2. Detection and handling of orphan chunks
3. Checksum verification for Chunks



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