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https://issues.apache.org/jira/browse/HDDS-11844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17904462#comment-17904462
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Nandakumar commented on HDDS-11844:
-----------------------------------
There are currently two Pipeline Safemode Rules
*OneReplicaPipelineSafeModeRule*
This rule waits for configured percentage of Pipelines to be reported by at
least one Datanode.
{code:java}
public static final String HDDS_SCM_SAFEMODE_ONE_NODE_REPORTED_PIPELINE_PCT =
"hdds.scm.safemode.atleast.one.node.reported.pipeline.pct";
public static final double
HDDS_SCM_SAFEMODE_ONE_NODE_REPORTED_PIPELINE_PCT_DEFAULT = 0.90;
{code}
*HealthyPipelineSafeModeRule*
This rules waits for configured percentage of Pipelines to be reported by all
the (three) Datanodes
{code:java}
public static final String HDDS_SCM_SAFEMODE_HEALTHY_PIPELINE_THRESHOLD_PCT =
"hdds.scm.safemode.healthy.pipeline.pct";
public static final double
HDDS_SCM_SAFEMODE_HEALTHY_PIPELINE_THRESHOLD_PCT_DEFAULT = 0.10;
{code}
While going over the code, HealthyPipelineSafeModeRule doesn't look like it
checks for all the Datanodes of a Pipeline to be reported.
Created HDDS-11904 to fix the same.
> Do not wait for all the Pipelines to be reported to exit SafeMode
> -----------------------------------------------------------------
>
> Key: HDDS-11844
> URL: https://issues.apache.org/jira/browse/HDDS-11844
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Nandakumar
> Priority: Major
>
> We don't have to wait for all the Pipelines to be reported to exit
> {{SafeMode}}. Having at least one open {{Pipeline}} to serve writes is enough
> to get out of {{SafeMode}}.
> We can reuse the {{Pipelines}} reported by {{Datanodes}}, but we don't have
> to wait for all the {{Pipelines}} to be reported to get SCM out of
> {{SafeMode}}.
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