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https://issues.apache.org/jira/browse/HDDS-4560?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Glen Geng updated HDDS-4560:
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Description:
Add ReadWriteLock into PipelineStateMap to protect contention between
RaftServer and PipelineManager.
If current leader SCM (as leader of term N) step-down while there are on-going
transactions, there might be read/write contentions that new leader SCM (as
leader of term N+1) is replicating raft log entries encapsulating method
addPipeline/removePipeline/updatePipelineState to underlying RaftServer which
will be applied by StateMachineUpdater, and at the same time PipelineManager is
calling getPipelines.
was:
Add ReadWriteLock into PipelineStateMap to protect contention between
RaftServer and PipelineManager.
If current leader SCM (as leader of term N) step-down while there are on-going
transactions, there might be read-write contention that new leader (as leader
of term N+1) replicate some method(addPipeline/removePipeline) to underlying
raft log which will be executed by StateMachineUpdater, and at the same time
PipelineManager is doing some getPipeline operations.
> Add ReadWriteLock into PipelineStateMap to protect contention between
> RaftServer and PipelineManager
> ----------------------------------------------------------------------------------------------------
>
> Key: HDDS-4560
> URL: https://issues.apache.org/jira/browse/HDDS-4560
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Components: SCM HA
> Affects Versions: 1.1.0
> Reporter: Glen Geng
> Assignee: Glen Geng
> Priority: Major
>
> Add ReadWriteLock into PipelineStateMap to protect contention between
> RaftServer and PipelineManager.
> If current leader SCM (as leader of term N) step-down while there are
> on-going transactions, there might be read/write contentions that new leader
> SCM (as leader of term N+1) is replicating raft log entries encapsulating
> method addPipeline/removePipeline/updatePipelineState to underlying
> RaftServer which will be applied by StateMachineUpdater, and at the same time
> PipelineManager is calling getPipelines.
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