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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