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https://issues.apache.org/jira/browse/HDDS-325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16579741#comment-16579741
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Elek, Marton commented on HDDS-325:
-----------------------------------
If I understood well (fix me, please, if I am wrong) this class does the same.
Just send anything to the inputDestination and it will be sent to the
realDestination with retry.
{code}
public class EventSupervisor<PAYLOAD extends
IdentifiableEventPayload,
COMPLETION_PAYLOAD extends IdentifiableEventPayload> implements
EventHandler<PAYLOAD> {
private final Event<PAYLOAD> realDestination;
private final Event<PAYLOAD> inputDestination;
private EventWatcher<PAYLOAD, COMPLETION_PAYLOAD> watcher;
public EventSupervisor(
Event<PAYLOAD> inputDestination,
Event<PAYLOAD> realDestination,
Event<COMPLETION_PAYLOAD> completionEvent,
LeaseManager<Long> leaseManager) {
this.realDestination = realDestination;
this.inputDestination = inputDestination;
this.watcher =
new EventWatcher<PAYLOAD, COMPLETION_PAYLOAD>(inputDestination,
completionEvent, leaseManager) {
@Override
protected void onTimeout(EventPublisher publisher,
PAYLOAD payload) {
publisher.fireEvent(realDestination, payload);
}
@Override
protected void onFinished(EventPublisher publisher,
PAYLOAD payload) {
}
};
}
public void start(EventQueue queue) {
queue.addHandler(inputDestination, this);
watcher.start(queue);
}
@Override
public void onMessage(PAYLOAD payload, EventPublisher publisher) {
publisher.fireEvent(realDestination, payload);
}
}
{code}
> Add event watcher for delete blocks command
> -------------------------------------------
>
> Key: HDDS-325
> URL: https://issues.apache.org/jira/browse/HDDS-325
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Datanode, SCM
> Reporter: Lokesh Jain
> Assignee: Lokesh Jain
> Priority: Major
> Fix For: 0.2.1
>
> Attachments: HDDS-325.001.patch, HDDS-325.002.patch,
> HDDS-325.003.patch
>
>
> This Jira aims to add watcher for deleteBlocks command. It removes the
> current rpc call required for datanode to send the acknowledgement for
> deleteBlocks.
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