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https://issues.apache.org/jira/browse/HDDS-13905?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei-Chiu Chuang resolved HDDS-13905.
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Fix Version/s: 2.2.0
Resolution: Fixed
> Bootstrap lock acquired in background services can lead to deadlock
> -------------------------------------------------------------------
>
> Key: HDDS-13905
> URL: https://issues.apache.org/jira/browse/HDDS-13905
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Swaminathan Balachandran
> Assignee: Swaminathan Balachandran
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.2.0
>
>
> Currently bootstrap lock is acquired after the snapshot is already opened
> thus this can lead to a deadlock condition during bootstrap where the
> Bootstrap flow has already acquired a bootstrap lock and is waiting on
> snapshot cache lock to be acquired which cannot be acquired since the
> snapshots are still open.
> To fix this all background services should always acquire bootstrap lock
> before opening a snapshot. The only con to this is that the entire task of
> background service would be blocked when the bootstrap copy batch is running
> on the leader om which should be ok since bootstrap would be an infrequent
> operation.
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