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https://issues.apache.org/jira/browse/HDDS-11331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17874353#comment-17874353
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Tsz-wo Sze commented on HDDS-11331:
-----------------------------------
It seem that this can be fixed by changing pipelineActions to ConcurrentHashMap
and Collections.synchronizedMap(LinkedHashMap)
{code}
private final Map<InetSocketAddress, LinkedHashMap<Key, PipelineAction>>
pipelineActions = new ConcurrentHashMap<>();
{code}
{code}
static class Key {
private final HddsProtos.PipelineID pipelineID;
private final PipelineAction.Action action;
Key(HddsProtos.PipelineID pipelineID, PipelineAction.Action action) {
this.pipelineID = pipelineID;
this.action = action;
}
@Override
public int hashCode() {
return Objects.hashCode(pipelineID);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
} else if (!(obj instanceof Key)) {
return false;
}
final Key that = (Key) obj;
return Objects.equals(this.action, that.action)
&& Objects.equals(this.pipelineID, that.pipelineID);
}
}
{code}
> Datanode cannot report for a long time
> --------------------------------------
>
> Key: HDDS-11331
> URL: https://issues.apache.org/jira/browse/HDDS-11331
> Project: Apache Ozone
> Issue Type: Improvement
> Components: DN
> Affects Versions: 1.4.0
> Reporter: JiangHua Zhu
> Assignee: JiangHua Zhu
> Priority: Major
> Attachments: 1505js.1, screenshot-1.png, screenshot-2.png,
> screenshot-3.png, screenshot-4.png, screenshot-5.png
>
>
> SCM shows that some Datanodes cannot report for a long time, and their status
> is DEAD or STALE.
> I printed jstack information, which shows that StateContext#pipelineActions
> is stuck and cannot report to SCM/Recon.
> The jstack information has been uploaded as an attachment.
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