prashantpogde opened a new pull request #1998:
URL: https://github.com/apache/ozone/pull/1998
## What changes were proposed in this pull request?
The goals of this PR is to write comprehensive framework that will
- drives SCM - finalization
- Inject failures in both DataNodes as well as SCM at every state change in
both SCM and DataNodes.
- Validate that SCM and DataNodes eventually finalize and upgrade is
successful.
HDDS upgrade model can be thought of as a State Machine model {states,
transitions}, where
states are specific stages in upgrade finalization either on the SCM node or
on the individual DataNodes
transitions are events that trigger state change
Different HDDS-Upgrade stages, for Both DataNodes as well SCM are defined as
- BeforePreFinalizeUpgrade
- AfterPreFinalizeUpgrade
- BeforeCompleteFinalization
- AfterCompleteFinalization
- AfterPostFinalizeUpgrade
This validation framework will trigger all possible combination of failures
while the nodes are in different possible states. The different combinations
will include :
- One Node failures - Fail SCM in the middle of SCM upgrade while the SCM
is at a specific state.
-Try this for all possible SCM-upgrade states
- One Node failures - Fail DataNode in the middle of SCM upgrade while the
SCM is at a specific state.
- Try this for all possible SCM-upgrade states
- One Node failures - Fail SCM in the middle of DataNode upgrade while the
DataNode is at a specific state.
- Try this for all possible DataNode-upgrade states
- One Node failures - Fail DataNode in the middle of DataNode upgrade while
the same DataNode is at a specific state.
- Try this for all possible DataNode-upgrade states
- Two Node Failures - Fail SCM as well as a DataNode in the middle of SCM
upgrade while the SCM is at a specific state.
- Try this for all possible SCM-upgrade states
- Two Node Failures - Fail SCM as well as a DataNode in the middle of the
DataNode upgrade while the same DataNode is at a specific state.
- Try this for all possible DataNode-upgrade states
- Two Node Failures - Fail SCM at a specific upgrade state in SCM thread
context. Fail DataNode at a specific upgrade state in DataNode upgrade thread
context.
- Try this for all permutations of SCM-upgrade-states and
Data-Node-Upgrade-states
- Multi-node failure - Fail All the DataNodes at specific SCM-upgrade state
- Try this for all possible SCM-upgrade states
- Multi-node failure - Fail All the DataNodes at specific DataNode-upgrade
state
- Try this for all possible DataNode-upgrade states
## What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/HDDS-4914
## How was this patch tested?
Running newly introduced Integration Tests.
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