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https://issues.apache.org/jira/browse/HDDS-1868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16925401#comment-16925401
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Lokesh Jain commented on HDDS-1868:
-----------------------------------
[~swagle] In the patch below condition would only be true for the leader
datanode.
{code:java}
if (reply.getRoleInfoProto().hasLeaderInfo()) {
reports.add(PipelineReport.newBuilder()
.setPipelineID(
PipelineID.valueOf(groupId.getUuid()).getProtobuf())
.build());
}
{code}
We would end up sending Pipeline Report only from leader to SCM. SCM should
ideally receive pipeline reports from all datanodes in a pipeline in order to
mark the pipeline as OPEN.
The follower does get a roleInfoProto but
reply.getRoleInfoProto().hasLeaderInfo() for a follower is false as it does not
have leaderInfo but a followerInfo.
> Ozone pipelines should be marked as ready only after the leader election is
> complete
> ------------------------------------------------------------------------------------
>
> Key: HDDS-1868
> URL: https://issues.apache.org/jira/browse/HDDS-1868
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Datanode, SCM
> Affects Versions: 0.4.0
> Reporter: Mukul Kumar Singh
> Assignee: Siddharth Wagle
> Priority: Major
> Fix For: 0.5.0
>
> Attachments: HDDS-1868.01.patch
>
>
> Ozone pipeline on restart start in allocated state, they are moved into open
> state after all the pipeline have reported to it. However this potentially
> can lead into an issue where the pipeline is still not ready to accept any
> incoming IO operations.
> The pipelines should be marked as ready only after the leader election is
> complete and leader is ready to accept incoming IO.
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